[zh-cn] sync _index.md

Signed-off-by: SSmallMonster 

Author: SSmallMonster

content/zh-cn/docs/tasks/extend-kubernetes/_index.md

@@ -1,5 +1,5 @@
 ---
 title: "扩展 Kubernetes"
 description: 了解针对工作环境需要来调整 Kubernetes 集群的进阶方法。
-weight: 90
+weight: 110
 ---