docs/zh_CN: Add translation zh_CN/maintainer/index.rst

Add a new translation
  Documentation/translations/zh_CN/maintainer/index.rst
and link it to zh_CN/index.rst
Signed-off-by: Wu XiangCheng <bobwxc@email.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/224959c4cdcd4c6554035145d5cedcd244887552.1621243426.git.bobwxc@email.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/zh_CN/index.rst

@@ -72,11 +72,11 @@ TODOlist:
    dev-tools/index
    doc-guide/index
    kernel-hacking/index
+   maintainer/index
 
 TODOList:
 
 * trace/index
-* maintainer/index
 * fault-injection/index
 * livepatch/index
 * rust/index

Documentation/translations/zh_CN/maintainer/index.rst

+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/maintainer/index.rst
+
+==============
+内核维护者手册
+==============
+
+本文档本是内核维护者手册的首页。
+本手册还需要大量完善！请自由提出（和编写）本手册的补充内容。
+*译注：指英文原版*
+
+TODOList:
+
+-   configure-git
+-   rebasing-and-merging
+-   pull-requests
+-   maintainer-entry-profile
+-   modifying-patches