Update routing.rst

Co-authored-by: Wouter de Jong <wouterj@users.noreply.github.com>

Author: Renan de Lima

routing.rst

@@ -469,7 +469,8 @@ You can also use these functions:
 
 ``service(string $alias)``
     Returns a routing condition service.
-    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.
+    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.
 
 .. versionadded:: 6.1