Ensure the DocBlock directly precedes the hook line for the `post_edit_form_tag` action in wp-admin/edit-form-advanced.php.

This fixes the parser getting confused about which DocBlock belongs to which hook or function in this file.

See #30473.


git-svn-id: https://develop.svn.wordpress.org/trunk@30539 602fd350-edb4-49c9-b593-d223f7449a82