doc(vcl/sharding): add precision for hash vs pass

Signed-off-by: Arthur Zinck <[email protected]>

Author: arthurzinck

docs/vcl-configuration.md

@@ -369,7 +369,7 @@ sub vcl_recv {
   if (req.http.X-shard == server.identity || remote.ip ~ acl_cluster) {
     set req.backend_hint = real.backend();
   } else {
-    return(pass);
+    return(pass); // Can be hash here you want to load the answer in the local cache of this Varnish instance
   }
 
   return (hash);