recommend the use `go test` commands instead of `make test` (#5151)
recommend the use `go test` commands instead of `make test` (#5151)


grpc/grpc-go,grpc/grpc-go,dfawley/grpc-go,menghanl/grpc-go,dfawley/grpc-go,stanley-cheung/grpc-go,stanley-cheung/grpc-go,menghanl/grpc-go