message: docs: Add path prefix to grpc json transcoder example
diff: @@ -116,7 +116,9 @@ gRPC or RESTful JSON requests to localhost:51051.
  - name: local_service
  domains: ["*"]
  routes:
  - - match: { prefix: "/" }
  + # NOTE: by default, matching happens based on the gRPC route, and not on the incoming request path.
  + # Reference: https://www.envoyproxy.io/docs/envoy/latest/configuration/http_filters/grpc_json_transcoder_filter#route-configs-for-transcoded-requests
  + - match: { prefix: "/helloworld.Greeter" }
  route: { cluster: grpc, timeout: { seconds: 60 } }
  http_filters:
  - name: envoy.grpc_json_transcoder
  