chore: add the content about emqx operator for installing

README-CN.md

@@ -40,6 +40,10 @@ docker run -d --name emqx -p 1883:1883 -p 8081:8081 -p 8083:8083 -p 8883:8883 -p
 - [单节点安装文档](https://docs.emqx.cn/broker/latest/getting-started/install.html)
 - [集群配置文档](https://docs.emqx.cn/broker/latest/advanced/cluster.html)
 
+#### 在 Kubernetes 上通过 EMQX Operator 部署
+
+详情请参考[使用文档](https://github.com/emqx/emqx-operator/blob/main/docs/zh_CN/getting-started/getting-started.md)
+
 ## 从源码构建
 
 3.0 版本开始，构建 *EMQX* 需要 Erlang/OTP R21+。

README.md

@@ -39,6 +39,10 @@ Get the binary package of the corresponding OS from [EMQX Download](https://www.
 - [Single Node Install](https://docs.emqx.io/en/broker/latest/getting-started/install.html)
 - [Multi Node Install](https://docs.emqx.io/en/broker/latest/advanced/cluster.html)
 
+#### Running on Kubernetes by EMQX Operator
+
+Please jump to [getting-started](https://github.com/emqx/emqx-operator/blob/main/docs/en_US/getting-started/getting-started.md) for more details.
+
 
 ## Build From Source