Adding exclude to PHP code sample

Was missing there...

Author: ThomasLandauer

routing.rst

@@ -1203,7 +1203,7 @@ the common configuration using options when importing the routes.
             # Uncomment this option to make that URL "/blog" instead
             # trailing_slash_on_root: false
             # you can optionally exclude some files/subdirectories when loading annotations
-            # exclude: '../../src/Controller/{DebugEmailController}.php'
+            exclude: '../../src/Controller/{DebugEmailController}.php'
 
     .. code-block:: xml
 
@@ -1255,6 +1255,7 @@ the common configuration using options when importing the routes.
                 ->namePrefix('blog_')
                 // these requirements are added to all imported routes
                 ->requirements(['_locale' => 'en|es|fr'])
+                ->exclude('../../src/Controller/{DebugEmailController}.php')
             ;
         };