Fix the page errors of contribute (#11726)

content/zh/docs/contribute/_index.md

@@ -1,3 +1,11 @@
+---
+content_template: templates/concept
+title: 为 Kubernetes 文档做贡献
+linktitle: 贡献
+main_menu: true
+weight: 80
+---
+
 <!--
 ---
 content_template: templates/concept
@@ -8,14 +16,6 @@ weight: 80
 ---
 -->
 
----
-content_template: templates/concept
-title: 为 Kubernetes 文档做贡献
-linktitle: Contribute
-main_menu: true
-weight: 80
----
-
 {{% capture overview %}}
 
 <!--