Update routing.rst

Co-authored-by: Oskar Stark <oskarstark@googlemail.com>

Author: ThomasLandauer

routing.rst

@@ -381,7 +381,6 @@ You can also use these functions:
     You'll have to add the ``#[AsRoutingConditionService]`` attribute or ``routing.condition_service``
     tag to your service if you want to use it in the condition::
     
-    .. code-block:: php
     
         // Controller:
         #[Route(condition: "service('route_checker').check(request)")]