zh: sync concepts/extend-kubernetes/operator.md

Signed-off-by: Rui Chen <rui@chenrui.dev>

content/zh/docs/concepts/extend-kubernetes/operator.md

@@ -213,20 +213,24 @@ Operator.
 
 {{% thirdparty-content %}}
 
+* [Charmed Operator Framework](https://juju.is/)
 * [kubebuilder](https://book.kubebuilder.io/)
 * [KUDO](https://kudo.dev/) (Kubernetes Universal Declarative Operator)
 * [Metacontroller](https://metacontroller.app/) along with WebHooks that
   you implement yourself
 * [Operator Framework](https://operatorframework.io)
+* [shell-operator](https://github.com/flant/shell-operator)
 -->
 以下是一些库和工具，你可用于编写自己的云原生 Operator。
 
 {{% thirdparty-content %}}
 
+* [Charmed Operator Framework](https://juju.is/)
 * [kubebuilder](https://book.kubebuilder.io/)
 * [KUDO](https://kudo.dev/) (Kubernetes 通用声明式 Operator)
 * [Metacontroller](https://metacontroller.app/)，可与 Webhooks 结合使用，以实现自己的功能。
 * [Operator Framework](https://operatorframework.io)
+* [shell-operator](https://github.com/flant/shell-operator)
 
 ## {{% heading "whatsnext" %}}
 
@@ -244,4 +248,3 @@ Operator.
 * 阅读 [CoreOS 原始文章](https://web.archive.org/web/20170129131616/https://coreos.com/blog/introducing-operators.html)，它介绍了 Operator 模式（这是一个存档版本的原始文章）。
 * 阅读这篇来自谷歌云的关于构建 Operator 最佳实践的
   [文章](https://cloud.google.com/blog/products/containers-kubernetes/best-practices-for-building-kubernetes-operators-and-stateful-apps)
-