Fixed a file location

javiereguiluz · javiereguiluz · commit 678e95b8cf0e · 2018-10-24T11:16:06.000+02:00
diff --git a/serializer/custom_normalizer.rst b/serializer/custom_normalizer.rst
@@ -58,5 +58,5 @@ Registering it in your Application
 
 Before using this normalizer in a Symfony application it must be registered as
 a service and :doc:`tagged </service_container/tags>` with ``serializer.normalizer``.
-If you're using the :ref:`default services.yml configuration <service-container-services-load-example>`,
+If you're using the :ref:`default services.yaml configuration <service-container-services-load-example>`,
 this is done automatically!
