Update HttpFoundation note after recent changes in routing component

Author: Marcin Sekalski

components/routing/introduction.rst

@@ -48,10 +48,9 @@ your autoloader to load the Routing component::
 
 .. note::
 
-    Be careful when using ``$_SERVER['REQUEST_URI']``, as it may include
-    any query parameters on the URL, which will cause problems with route
-    matching. An easy way to solve this is to use the HttpFoundation component
-    as explained :ref:`below <components-routing-http-foundation>`.
+    The :class:`Symfony\\Component\\Routing\\RequestContext` parameters can be populated
+    with the values stored in ``$_SERVER``, but it's easier to use the HttpFoundation
+    component as explained :ref:`below <components-routing-http-foundation>`.
 
 You can add as many routes as you like to a
 :class:`Symfony\\Component\\Routing\\RouteCollection`.