[feat]: add new sample multirpc
diff --git a/multirpc/go-client/cmd/main.go b/multirpc/go-client/cmd/main.go
index 7e0f237..d87a442 100644
--- a/multirpc/go-client/cmd/main.go
+++ b/multirpc/go-client/cmd/main.go
@@ -38,7 +38,7 @@
 	if err != nil {
 		panic(err)
 	}
-	err = nil
+
 	cli, err := ins.NewClient(
 		client.WithClientProtocolTriple())
 	if err != nil {
@@ -70,9 +70,8 @@
 	if err != nil {
 		panic(err)
 	}
-	err = nil
 	var respDubbo string
-	if err := connDubbo.CallUnary(context.Background(), []interface{}{"hello", "new", "dubbo"}, &respDubbo, "SayHello"); err != nil {
+	if err = connDubbo.CallUnary(context.Background(), []interface{}{"hello", "new", "dubbo"}, &respDubbo, "SayHello"); err != nil {
 		logger.Errorf("GreetProvider.Greet err: %s", err)
 		return
 	}
diff --git a/multirpc/go-server/cmd/main.go b/multirpc/go-server/cmd/main.go
index 672390e..6b78ec8 100644
--- a/multirpc/go-server/cmd/main.go
+++ b/multirpc/go-server/cmd/main.go
@@ -72,10 +72,9 @@
 	// 利用生成代码注册业务逻辑(GreetTripleServer)
 	// service配置,可以在此处覆盖server注入的默认配置
 	// 若观察RegisterGreetServiceHandler的代码,会发现本质上是调用Server.Register
-	if err := greet.RegisterGreetServiceHandler(srv, &GreetMultiRPCServer{}); err != nil {
+	if err = greet.RegisterGreetServiceHandler(srv, &GreetMultiRPCServer{}); err != nil {
 		panic(err)
 	}
-	err = nil
 	// 运行
 	if err := srv.Serve(); err != nil {
 		logger.Error(err)
@@ -106,12 +105,12 @@
 	if err != nil {
 		panic(err)
 	}
-	if err := srvDubbo.Register(&GreetProvider{}, nil, server.WithInterface("GreetProvider")); err != nil {
+	if err = srvDubbo.Register(&GreetProvider{}, nil, server.WithInterface("GreetProvider")); err != nil {
 		panic(err)
 	}
 
 	// 运行
-	if err := srvDubbo.Serve(); err != nil {
+	if err = srvDubbo.Serve(); err != nil {
 		logger.Error(err)
 	}
 
@@ -140,7 +139,7 @@
 	if err != nil {
 		panic(err)
 	}
-	if err := srvJsonRpc.Register(&GreetProvider{}, nil, server.WithInterface("GreetProvider")); err != nil {
+	if err = srvJsonRpc.Register(&GreetProvider{}, nil, server.WithInterface("GreetProvider")); err != nil {
 		panic(err)
 	}