Missing quote in match example

policy/v1beta1/cfg.proto

@@ -119,7 +119,7 @@ message Rule {
   //
   // * an empty match evaluates to `true`
   // * `true`, a boolean literal; a rule with this match will always be executed
-  // * `match(destination.service.host, "ratings.*)` selects any request targeting a service whose
+  // * `match(destination.service.host, "ratings.*")` selects any request targeting a service whose
   // name starts with "ratings"
   // * `attr1 == "20" && attr2 == "30"` logical AND, OR, and NOT are also available
   string match = 1;