Polish examples
diff --git a/examples/main.go b/examples/main.go
index 72a2a68..8a353f1 100644
--- a/examples/main.go
+++ b/examples/main.go
@@ -66,7 +66,7 @@
 				FileNum:  1,
 				Level:    rocketmq.LogLevelInfo,
 			},
-		}}
+		}, Model: rocketmq.Clustering}
 
 		ConsumeWithPush(cConfig)
 	}