Docs/zh_CN: update Alex Shi new email address

I am leaving Alibaba, udpate the old email address to new one.
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Harry Wei <harryxiyou@gmail.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/1616748571-52058-2-git-send-email-alex.shi@linux.alibaba.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/zh_CN/disclaimer-zh_CN.rst

@@ -6,4 +6,4 @@
 
 .. note::
      如果您发现本文档与原始文件有任何不同或者有翻译问题，请联系该文件的译者，
-     或者请求时奎亮的帮助：<alex.shi@linux.alibaba.com>。
+     或者请求时奎亮的帮助：<alexs@kernel.org>。

MAINTAINERS

@@ -4195,7 +4195,7 @@ F:	Documentation/dev-tools/checkpatch.rst
 
 CHINESE DOCUMENTATION
 M:	Harry Wei <harryxiyou@gmail.com>
-M:	Alex Shi <alex.shi@linux.alibaba.com>
+M:	Alex Shi <alexs@kernel.org>
 L:	xiyoulinuxkernelgroup@googlegroups.com (subscribers-only)
 S:	Maintained
 F:	Documentation/translations/zh_CN/