Update README-zh.md

Author: ranchowang

README-zh.md

@@ -63,14 +63,16 @@ README：
 - [spring cloud](https://github.com/Tencent/spring-cloud-tencent)
 - [spring boot](https://github.com/polarismesh/spring-boot-polaris)
 - dubbo-java
-  - [registry, discovery and routing](https://github.com/apache/dubbo-spi-extensions/tree/master/dubbo-registry-extensions)
+  - [registry and discovery](https://github.com/apache/dubbo-spi-extensions/tree/master/dubbo-registry-extensions)
+  - [routing and load balance](https://github.com/apache/dubbo-spi-extensions/tree/master/dubbo-cluster-extensions)
   - [circuit breaker and rate limiter](https://github.com/apache/dubbo-spi-extensions/tree/master/dubbo-filter-extensions)
 - [grpc-java](https://github.com/polarismesh/grpc-java-polaris)
 
 使用集成北极星 Go SDK 的 HTTP or RPC 框架：
 
 - dubbo-go
-  - [registry, discovery and routing](https://github.com/apache/dubbo-go/tree/main/registry)
+  - [registry and discovery](https://github.com/apache/dubbo-go/tree/main/registry)
+  - [routing](https://github.com/apache/dubbo-go/tree/main/cluster/router)
   - [circuit breaker and rate limiter](https://github.com/apache/dubbo-go/tree/main/filter)
   - [examples](https://github.com/apache/dubbo-go-samples/tree/master/polaris)
 - [grpc-go](https://github.com/polarismesh/grpc-go-polaris)