Fix quote rendering

Author: dunglas

core/push-relations.md

@@ -1,12 +1,7 @@
 # Pushing Related Resources Using HTTP/2
 
->    HTTP/2 allows a server to pre-emptively send (or "push") responses
-     (along with corresponding "promised" requests) to a client in
-     association with a previous client-initiated request.  This can be
-     useful when the server knows the client will need to have those
-     responses available in order to fully process the response to the
-     original request.
-     - [RFC 7540](https://tools.ietf.org/html/rfc7540#section-8.2)
+> HTTP/2 allows a server to pre-emptively send (or "push") responses (along with corresponding "promised" requests) to a client in association with a previous client-initiated request. This can be useful when the server knows the client will need to have those responses available in order to fully process the response to the original request.
+> - [RFC 7540](https://tools.ietf.org/html/rfc7540#section-8.2)
 
 API Platform leverages this capability by pushing relations of a resource to clients.