feature: redirect query params too in RedirectController

Adding documentation for the redirectAction improvement

Author: Simperfit

routing/redirect_in_config.rst

@@ -96,7 +96,7 @@ Redirecting Using a Route
 
 Assume you are migrating your website from WordPress to Symfony, you want to
 redirect ``/wp-admin`` to the route ``sonata_admin_dashboard``. You don't know
-the path, only the route name. This can be achieved using the
+the path, only the route name, if you pass query parameters to this route, it will be redirected too. This can be achieved using the
 :method:`Symfony\\Bundle\\FrameworkBundle\\Controller\\RedirectController::redirectAction`
 action:
 
@@ -155,3 +155,4 @@ action:
     Because you are redirecting to a route instead of a path, the required
     option is called ``route`` in the ``redirect()`` action, instead of ``path``
     in the ``urlRedirect()`` action.
+