diff -u b/core/modules/system/src/Tests/Form/ModulesListFormWebTest.php b/core/modules/system/src/Tests/Form/ModulesListFormWebTest.php
--- b/core/modules/system/src/Tests/Form/ModulesListFormWebTest.php
+++ b/core/modules/system/src/Tests/Form/ModulesListFormWebTest.php
@@ -50,8 +50,9 @@
     // Check that system_test's help link was rendered correctly.
     $this->assertFieldByXPath("//a[contains(@href, '/admin/help/system_test') and @title='Help']");
 
-    // Ensure that Testing modules machine name is printed. Testing module is
-    // used because its machine name is different than its human readable name.
+    // Ensure that the Testing module's machine name is printed. Testing module
+    // is used because its machine name is different than its human readable
+    // name.
     $this->assertText('simpletest');
   }
 
diff -u b/core/modules/system/templates/system-modules-details.html.twig b/core/modules/system/templates/system-modules-details.html.twig
--- b/core/modules/system/templates/system-modules-details.html.twig
+++ b/core/modules/system/templates/system-modules-details.html.twig
@@ -8,14 +8,14 @@
  * Available variables:
  * - header: Table header containing the following cells:
  *   - installed: A localized string for the title of the Installed column.
- *   - namet: A localized string for the title of the Name column.
+ *   - name: A localized string for the title of the Name column.
  *   - description: A localized string for the title of the Description column.
  * - modules: Contains multiple module instances. Each module contains:
  *   - attributes: Attributes on the row.
  *   - checkbox: A checkbox for enabling the module.
  *   - name: The human-readable name of the module.
- *   - id: A unqiue id for interacting with the details element.
- *   - enable_id: A unique id for interacting with the checkbox element.
+ *   - id: A unqiue identifier for interacting with the details element.
+ *   - enable_id: A unique identifier for interacting with the checkbox element.
  *   - description: The description of the module.
  *   - machine_name: The module's machine name.
  *   - version: Information about the module version.