Doesn't like !project_page nor !project_issue_queue

Problem/Motivation

For one of my Drupal 10.5.2 sites, when I click on Help for the Upgrade_status module in Administration>Extend>List
an error message gets displayed:

User warning: Placeholders must begin with one of the following "@", ":" or "%", invalid placeholder (!project_page) with string: "For a full description, visit the project page" in Drupal\Component\Render\FormattableMarkup::placeholderFormat() (line 247 of core/lib/Drupal/Component/Render/FormattableMarkup.php).

Drupal\Component\Render\FormattableMarkup::placeholderFormat() (Line: 195)
Drupal\Core\StringTranslation\TranslatableMarkup->render() (Line: 15)
Drupal\Core\StringTranslation\TranslatableMarkup->__toString() (Line: 36)
upgrade_status_help()
call_user_func_array() (Line: 407)
Drupal\Core\Extension\ModuleHandler->invoke() (Line: 173)
Drupal\help\Controller\HelpController->helpPage()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 637)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 116)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 90)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
Drupal\Core\DrupalKernel->handle() (Line: 19)

Steps to reproduce

Click on Help for the Upgrade_status module in Administration>Extend>List

Proposed resolution

I changed "!project_page" to "@project_page" in line 36 (twice) and
"!project_issue_queue" to "@project_issue_queue" in line 37 (twice)
in upgrade_status.module and the error message stopped appearing.

Remaining tasks

User interface changes

API changes

Data model changes