Merge branch '5.4' into 6.0

* 5.4:
  [Messenger] fix broken link to Validator component

Author: javiereguiluz

messenger.rst

@@ -2115,7 +2115,7 @@ original request context (i.e. the host, the HTTP port, etc.) which is needed
 when building absolute URLs.
 
 Add the ``validation`` middleware if you need to validate the message
-object using the :doc:`Validator component <validator>` before handling it.
+object using the :doc:`Validator component </components/validator>` before handling it.
 If validation fails, a ``ValidationFailedException`` will be thrown. The
 :class:`Symfony\\Component\\Messenger\\Stamp\\ValidationStamp` can be used
 to configure the validation groups.