Update routing.rst

bglamer · wouterj · commit 313c1b9f7a7f · 2015-01-16T18:11:37.000+01:00
The first code type of "requirements of route conditions" is marked as PHP but it is annotations.
diff --git a/book/routing.rst b/book/routing.rst
@@ -647,7 +647,7 @@ requirements can easily be added for each parameter. For example:
 
 .. configuration-block::
 
-    .. code-block:: php
+    .. code-block:: php-annotations
 
         // src/AppBundle/Controller/BlogController.php
 
