fix example

Author: kesonan

docs/tasks/grpc/client/quickstart.md

@@ -53,6 +53,7 @@ func main() {
 	var clientConf zrpc.RpcClientConf
 	conf.MustLoad("etc/client.yaml", &clientConf)
 	conn := zrpc.MustNewClient(clientConf)
+	client := greet.NewGreetClient(conn.Conn())
 	resp, err := client.Ping(context.Background(), &greet.Request{})
 	if err != nil {
 		log.Fatal(err)

i18n/en/docusaurus-plugin-content-docs/current/tasks/grpc/client/quickstart.md

@@ -53,6 +53,7 @@ func main() {
     var clientConf zrpc.RpcClientConf
     conf.MustLoad("etc/client.yaml", &clientConf)
     conn := zrpc.MustNewClient(clientConf)
+    client := greet.NewGreetClient(conn.Conn())
     resp, err := client.Ping(context.Background(), &greet.Request{})
     if err != nil {
         log.Fatal(err)