Replace "@param Drupal" with "@param \Drupal"

Applied patch from #2 and was successful

"@param \Drupal" has got changed in the documentation blocks for 3 files listed below

modules/comment/comment.module
modules/help/help.api.php
shortcut/shortcut.module

I also code reviewed the patch and confirm the proper formatting was applied.

@loopduplicate thanks for the suggestions. Will follow the same from next time

Thank you for your work on cleaning up Drupal core's code style!

In order to fix core coding standards in a maintainable way, all our coding standards issues should be done on a per-rule basis across all of core, rather than fixing standards in individual modules or files. We should also separate fixes where we need to write new documentation from fixes where we need to correct existing standards. This all should be done as part of #2571965: [meta] Fix PHP coding standards in core, stage 1. A good place to start is the child issues of #2572645: [Meta] Fix 'Drupal.Commenting.FunctionComment' coding standard.

For background information on why we usually will not commit coding standards fixes that aren't scoped in that way, see the core issue scope guidelines, especially the note about coding standards cleanups. That document also includes numerous suggestions for scoping issues including documentation coding standards cleanups.

Contributing to the overall plan above will help ensure that your fixes for core's coding standards remain in core the long term.

Taking such an apporach would allow us to not make the same mistake in the future and identify all the current errors in the code base. For example there's:

   * @param Symfony\Component\HttpKernel\Event\PostResponseEvent $event
   *   The Event to process.
   */
  public function onTerminate(PostResponseEvent $event) {
    $this->moduleHandler->writeCache();
  }

in core/lib/Drupal/Core/EventSubscriber/RequestCloseSubscriber.php

I think this is a duplicate of #2723621: Fix Drupal.Commenting.FunctionComment.IncorrectTypeHint and Drupal.Commenting.FunctionComment.InvalidTypeHint