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.

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git-svn-id: http://core.svn.wordpress.org/trunk@30528 1a063a9b-81f0-0310-95a4-ce76da25c4cd