virtual service: minor grammar fix (#3205)

Fixes #1931

Co-authored-by: John Howard <[email protected]>

Author: istio-testing

networking/v1/virtual_service.pb.go

@@ -696,7 +696,7 @@ message TCPRoute {
   repeated RouteDestination route = 2;
 }
 
-// HttpMatchRequest specifies a set of criterion to be met in order for the
+// HttpMatchRequest specifies a set of criteria to be met in order for the
 // rule to be applied to the HTTP request. For example, the following
 // restricts the rule to match only requests where the URL path
 // starts with /ratings/v2/ and the request contains a custom `end-user` header

networking/v1/virtual_service.proto

@@ -697,7 +697,7 @@ message TCPRoute {
   repeated RouteDestination route = 2;
 }
 
-// HttpMatchRequest specifies a set of criterion to be met in order for the
+// HttpMatchRequest specifies a set of criteria to be met in order for the
 // rule to be applied to the HTTP request. For example, the following
 // restricts the rule to match only requests where the URL path
 // starts with /ratings/v2/ and the request contains a custom `end-user` header

networking/v1alpha3/virtual_service.pb.go

@@ -697,7 +697,7 @@ message TCPRoute {
   repeated RouteDestination route = 2;
 }
 
-// HttpMatchRequest specifies a set of criterion to be met in order for the
+// HttpMatchRequest specifies a set of criteria to be met in order for the
 // rule to be applied to the HTTP request. For example, the following
 // restricts the rule to match only requests where the URL path
 // starts with /ratings/v2/ and the request contains a custom `end-user` header