diff --git a/core/modules/block/block.module b/core/modules/block/block.module
index 5e3ad8d..f9dd787 100644
--- a/core/modules/block/block.module
+++ b/core/modules/block/block.module
@@ -30,7 +30,7 @@ function block_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<dt>' . t('Toggling between different themes') . '</dt>';
       $output .= '<dd>' . t('Blocks are placed and configured specifically for each theme. The Block layout page opens with the default theme, but you can toggle to other installed themes.') . '</dd>';
       $output .= '<dt>' . t('Demonstrating block regions for a theme') . '</dt>';
-      $output .= '<dd>' . t('You can see where the regions are for the current theme by clicking the <em>Demonstrate block regions</em> link on the Block layout page. Regions are specific to each theme.', array('!blocks' => (\Drupal::moduleHandler()->moduleExists('block')) ? \Drupal::url('block.admin_display') : '#')) . '</dd>';
+      $output .= '<dd>' . t('You can see where the regions are for the current theme by clicking the <em>Demonstrate block regions</em> link on the <a href="!blocks">Block layout page</a>. Regions are specific to each theme.', array('!blocks' => \Drupal::url('block.admin_display'))) . '</dd>';
       $output .= '<dt>' . t('Configuring block settings') . '</dt>';
       $output .= '<dd>' . t('To change the settings of an individual block click on the <em>Configure</em> link on the <a href="!blocks">Block layout page</a>. The available options vary depending on the module that provides the block. For all blocks you can change the block title and toggle whether to display it.', array('!blocks' => Drupal::url('block.admin_display'))) . '</dd>';
       $output .= '<dt>' . t('Controlling visibility') . '</dt>';
diff --git a/core/modules/ckeditor/ckeditor.module b/core/modules/ckeditor/ckeditor.module
index 4471654..1520c5e 100644
--- a/core/modules/ckeditor/ckeditor.module
+++ b/core/modules/ckeditor/ckeditor.module
@@ -20,11 +20,11 @@ function ckeditor_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Enabling CKEditor for individual text formats') . '</dt>';
-      $output .= '<dd>' . t('CKEditor has to be enabled and configured separately for individual text formats from the <a href="!formats">Text formats and editors page</a> because the filter settings for each text format can be different. For more information, see the <a href="!text_editor">Text Editor help page</a> and <a href="!filter">Filter help page</a>.', array('!formats' => (\Drupal::moduleHandler()->moduleExists('filter')) ? \Drupal::url('filter.admin_overview') : '#', '!text_editor' => \Drupal::url('help.page', array('name' => 'editor')), '!filter' => \Drupal::url('help.page', array('name' => 'filter')))) . '</dd>';
+      $output .= '<dd>' . t('CKEditor has to be enabled and configured separately for individual text formats from the <a href="!formats">Text formats and editors page</a> because the filter settings for each text format can be different. For more information, see the <a href="!text_editor">Text Editor help page</a> and <a href="!filter">Filter help page</a>.', array('!formats' => \Drupal::url('filter.admin_overview'), '!text_editor' => \Drupal::url('help.page', array('name' => 'editor')), '!filter' => \Drupal::url('help.page', array('name' => 'filter')))) . '</dd>';
       $output .= '<dt>' . t('Configuring the toolbar') . '</dt>';
       $output .= '<dd>' . t('When CKEditor is chosen from the <em>Text editor</em> drop-down menu, its toolbar configuration is displayed. You can add and remove buttons from the <em>Active toolbar</em> by dragging and dropping them, and additional rows can be added to organize the buttons.') . '</dd>';
       $output .= '<dt>' . t('Formatting content') . '</dt>';
-      $output .= '<dd>' . t('CKEditor only allow users to format content in accordance with the filter configuration of the specific text format. If a text format excludes certain HTML tags, the corresponding toolbar buttons are not displayed to users when they edit a text field in this format. For more information see the <a href="!filter">Filter help page</a>.', array('!filter' => (\Drupal::moduleHandler()->moduleExists('filter')) ? \Drupal::url('help.page', array('name' => 'filter')) : '#')) . '</dd>';
+      $output .= '<dd>' . t('CKEditor only allow users to format content in accordance with the filter configuration of the specific text format. If a text format excludes certain HTML tags, the corresponding toolbar buttons are not displayed to users when they edit a text field in this format. For more information see the <a href="!filter">Filter help page</a>.', array('!filter' => \Drupal::url('help.page', array('name' => 'filter')))) . '</dd>';
       $output .= '<dt>' . t('Toggling between formatted text and HTML source') . '</dt>';
       $output .= '<dd>' . t('If the <em>Source</em> button is available in the toolbar, users can click this button to disable the visual editor and edit the HTML source directly. After toggling back, the visual editor uses the allowed HTML tags to format the text — independent of whether buttons for these tags are available in the toolbar. If the text format is set to <em>limit the use of HTML tags</em>, then all excluded tags will be stripped out of the HTML source when the user toggles back to the text editor.') . '</dd>';
       $output .= '</dl>';
diff --git a/core/modules/editor/editor.module b/core/modules/editor/editor.module
index 4654cce..aa5ce72 100644
--- a/core/modules/editor/editor.module
+++ b/core/modules/editor/editor.module
@@ -30,7 +30,7 @@ function editor_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<dt>' . t('Installing text editors') . '</dt>';
       $output .= '<dd>' . t('The Text Editor module provides a framework for managing editors. To use it, you also need to enable a text editor. This can either be the core <a href="!ckeditor">CKEditor module</a>, which can be enabled on the <a href="!extend">Extend page</a>, or a contributed module for any other text editor. When installing a contributed text editor module, be sure to check the installation instructions, because you will most likely need to download and install an external library as well as the Drupal module.', array('!ckeditor' => (\Drupal::moduleHandler()->moduleExists('ckeditor')) ? \Drupal::url('help.page', array('name' => 'ckeditor')) : '#', '!extend' => \Drupal::url('system.modules_list'))) . '</dd>';
       $output .= '<dt>' . t('Enabling a text editor for a text format') . '</dt>';
-      $output .= '<dd>' . t('On the <a href="!formats">Text formats and editors page</a> you can see which text editor is associated with each text format. You can change this by clicking on the <em>Configure</em> link, and then choosing a text editor or <em>none</em> from the <em>Text editor</em> drop-down list. The text editor will then be displayed with any text field for which this text format is chosen.', array('!formats' => (\Drupal::moduleHandler()->moduleExists('filter')) ? \Drupal::url('filter.admin_overview') : '#')) . '</dd>';
+      $output .= '<dd>' . t('On the <a href="!formats">Text formats and editors page</a> you can see which text editor is associated with each text format. You can change this by clicking on the <em>Configure</em> link, and then choosing a text editor or <em>none</em> from the <em>Text editor</em> drop-down list. The text editor will then be displayed with any text field for which this text format is chosen.', array('!formats' => \Drupal::url('filter.admin_overview'))) . '</dd>';
       $output .= '<dt>' . t('Configuring a text editor') . '</dt>';
       $output .= '<dd>' . t('Once a text editor is associated with a text format, you can configure it by clicking on the <em>Configure</em> link for this format. Depending on the specific text editor, you can configure it for example by adding buttons to its toolbar. Typically these buttons provide formatting or editing tools, and they often insert HTML tags into the field source. For details, see the help page of the specific text editor.') . '</dd>';
       $output .= '<dt>' . t('Using different text editors and formats') . '</dt>';
diff --git a/core/modules/entity_reference/entity_reference.module b/core/modules/entity_reference/entity_reference.module
index cb352cc..d3d2d1b 100644
--- a/core/modules/entity_reference/entity_reference.module
+++ b/core/modules/entity_reference/entity_reference.module
@@ -23,7 +23,7 @@ function entity_reference_help($route_name, RouteMatchInterface $route_match) {
     case 'help.page.entity_reference':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The Entity Reference module allows you to create fields that contain links to other entities (such as content items, taxonomy terms, etc.) within the site. This allows you, for example, to include a link to a user within a content item. For more information, see <a href="!er_do">the online documentation for the Entity Reference module</a> and the <a href="!field_help">Field module help page</a>.', array('!field_help' => (\Drupal::moduleHandler()->moduleExists('field')) ? \Drupal::url('help.page', array('name' => 'field')) : '#', '!er_do' => 'https://drupal.org/documentation/modules/entityreference')) . '</p>';
+      $output .= '<p>' . t('The Entity Reference module allows you to create fields that contain links to other entities (such as content items, taxonomy terms, etc.) within the site. This allows you, for example, to include a link to a user within a content item. For more information, see <a href="!er_do">the online documentation for the Entity Reference module</a> and the <a href="!field_help">Field module help page</a>.', array('!field_help' => \Drupal::url('help.page', array('name' => 'field')), '!er_do' => 'https://drupal.org/documentation/modules/entityreference')) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Managing and displaying entity reference fields') . '</dt>';
diff --git a/core/modules/file/file.module b/core/modules/file/file.module
index 3c2137c..2b6890c 100644
--- a/core/modules/file/file.module
+++ b/core/modules/file/file.module
@@ -30,7 +30,7 @@ function file_help($route_name, RouteMatchInterface $route_match) {
     case 'help.page.file':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The File module allows you to create fields that contain files. See the <a href="!field">Field module help</a> and the <a href="!field_ui">Field UI help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href="!file_documentation">online documentation for the File module</a>.', array('!field' => (\Drupal::moduleHandler()->moduleExists('field')) ? \Drupal::url('help.page', array('name' => 'field')) : '#', '!field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? \Drupal::url('help.page', array('name' => 'field_ui')) :'#', '!file_documentation' => 'https://drupal.org/documentation/modules/file')) . '</p>';
+      $output .= '<p>' . t('The File module allows you to create fields that contain files. See the <a href="!field">Field module help</a> and the <a href="!field_ui">Field UI help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href="!file_documentation">online documentation for the File module</a>.', array('!field' => \Drupal::url('help.page', array('name' => 'field')), '!field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? \Drupal::url('help.page', array('name' => 'field_ui')) :'#', '!file_documentation' => 'https://drupal.org/documentation/modules/file')) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Managing and displaying file fields') . '</dt>';
diff --git a/core/modules/link/link.module b/core/modules/link/link.module
index 0a19a80..84c6811 100644
--- a/core/modules/link/link.module
+++ b/core/modules/link/link.module
@@ -16,7 +16,7 @@ function link_help($route_name, RouteMatchInterface $route_match) {
     case 'help.page.link':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The Link module allows you to create fields that contain internal or external URLs and optional link text. See the <a href="!field">Field module help</a> and the <a href="!field_ui">Field UI help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href="!link_documentation">online documentation for the Link module</a>.', array('!field' => (\Drupal::moduleHandler()->moduleExists('field')) ? \Drupal::url('help.page', array('name' => 'field')) : '#', '!field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? \Drupal::url('help.page', array('name' => 'field_ui')) : '#', '!link_documentation' => 'https://drupal.org/documentation/modules/link')) . '</p>';
+      $output .= '<p>' . t('The Link module allows you to create fields that contain internal or external URLs and optional link text. See the <a href="!field">Field module help</a> and the <a href="!field_ui">Field UI help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href="!link_documentation">online documentation for the Link module</a>.', array('!field' => \Drupal::url('help.page', array('name' => 'field')), '!field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? \Drupal::url('help.page', array('name' => 'field_ui')) : '#', '!link_documentation' => 'https://drupal.org/documentation/modules/link')) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Managing and displaying link fields') . '</dt>';
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 7a18f78..d33d6b2 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -82,13 +82,13 @@ function node_help($route_name, RouteMatchInterface $route_match) {
     case 'help.page.node':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The Node module manages the creation, editing, deletion, settings, and display of the main site content. Content items managed by the Node module are typically displayed as pages on your site, and include a title, some meta-data (author, creation time, content type, etc.), and optional fields containing text or other data (fields are managed by the <a href="!field">Field module</a>). For more information, see <a href="!node">the online documentation for the Node module</a>.', array('!node' => 'https://drupal.org/documentation/modules/node', '!field' => (\Drupal::moduleHandler()->moduleExists('field')) ? \Drupal::url('help.page', array('name' => 'field')) : '#')) . '</p>';
+      $output .= '<p>' . t('The Node module manages the creation, editing, deletion, settings, and display of the main site content. Content items managed by the Node module are typically displayed as pages on your site, and include a title, some meta-data (author, creation time, content type, etc.), and optional fields containing text or other data (fields are managed by the <a href="!field">Field module</a>). For more information, see <a href="!node">the online documentation for the Node module</a>.', array('!node' => 'https://drupal.org/documentation/modules/node', '!field' => \Drupal::url('help.page', array('name' => 'field')))) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Creating content') . '</dt>';
       $output .= '<dd>' . t('When new content is created, the Node module records basic information about the content, including the author, date of creation, and the <a href="!content-type">Content type</a>. It also manages the <em>publishing options</em>, which define whether or not the content is published, promoted to the front page of the site, and/or sticky at the top of content lists. Default settings can be configured for each <a href="!content-type">type of content</a> on your site.', array('!content-type' => \Drupal::url('entity.node_type.collection'))) . '</dd>';
       $output .= '<dt>' . t('Creating custom content types') . '</dt>';
-      $output .= '<dd>' . t('The Node module gives users with the <em>Administer content types</em> permission the ability to <a href="!content-new">create new content types</a> in addition to the default ones already configured. Creating custom content types gives you the flexibility to add <a href="!field">fields</a> and configure default settings that suit the differing needs of various site content.', array('!content-new' => \Drupal::url('node.type_add'), '!field' => (\Drupal::moduleHandler()->moduleExists('field')) ? \Drupal::url('help.page', array('name' => 'field')) : '#')) . '</dd>';
+      $output .= '<dd>' . t('The Node module gives users with the <em>Administer content types</em> permission the ability to <a href="!content-new">create new content types</a> in addition to the default ones already configured. Creating custom content types gives you the flexibility to add <a href="!field">fields</a> and configure default settings that suit the differing needs of various site content.', array('!content-new' => \Drupal::url('node.type_add'), '!field' => \Drupal::url('help.page', array('name' => 'field')))) . '</dd>';
       $output .= '<dt>' . t('Administering content') . '</dt>';
       $output .= '<dd>' . t('The <a href="!content">Content</a> page lists your content, allowing you add new content, filter, edit or delete existing content, or perform bulk operations on existing content.', array('!content' => \Drupal::url('system.admin_content'))) . '</dd>';
       $output .= '<dt>' . t('Creating revisions') . '</dt>';
diff --git a/core/modules/text/text.module b/core/modules/text/text.module
index cc92764..884f7e6 100644
--- a/core/modules/text/text.module
+++ b/core/modules/text/text.module
@@ -18,7 +18,7 @@ function text_help($route_name, RouteMatchInterface $route_match) {
     case 'help.page.text':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The Text module allows you to create short and long text fields with optional summaries. See the <a href="!field">Field module help</a> and the <a href="!field_ui">Field UI help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href="!text_documentation">online documentation for the Text module</a>.', array('!field' => (\Drupal::moduleHandler()->moduleExists('field')) ? \Drupal::url('help.page', array('name' => 'field')) : '#', '!field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? \Drupal::url('help.page', array('name' => 'field_ui')) :'#', '!text_documentation' => 'https://drupal.org/documentation/modules/text')) . '</p>';
+      $output .= '<p>' . t('The Text module allows you to create short and long text fields with optional summaries. See the <a href="!field">Field module help</a> and the <a href="!field_ui">Field UI help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href="!text_documentation">online documentation for the Text module</a>.', array('!field' => \Drupal::url('help.page', array('name' => 'field')), '!field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? \Drupal::url('help.page', array('name' => 'field_ui')) :'#', '!text_documentation' => 'https://drupal.org/documentation/modules/text')) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Managing and displaying text fields') . '</dt>';