docs/zh_CN: redirect submit-checklist

Now we has the Chinese version submit-checklist, so redirect it in
Chinese docs.
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Harry Wei <harryxiyou@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Tom Levy <tomlevy93@gmail.com>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/zh_CN/process/5.Posting.rst

@@ -14,7 +14,7 @@
 也可在以下文件中找到
 :ref:`Documentation/translations/zh_CN/process/submitting-patches.rst <cn_submittingpatches>`,
 :ref:`Documentation/process/submitting-drivers.rst  <submittingdrivers>`
-和 :ref:`Documentation/process/submit-checklist.rst <submitchecklist>`.
+和 :ref:`Documentation/translations/zh_CN/process/submit-checklist.rst <cn_submitchecklist>`.
 
 何时邮寄
 --------

Documentation/translations/zh_CN/process/submitting-patches.rst

@@ -22,7 +22,7 @@
 
 以下文档含有大量简洁的建议， 具体请见：
 :ref:`Documentation/process <development_process_main>`
-同样，:ref:`Documentation/process/submit-checklist.rst <submitchecklist>`
+同样，:ref:`Documentation/translations/zh_CN/process/submit-checklist.rst <cn_submitchecklist>`
 给出在提交代码前需要检查的项目的列表。如果你在提交一个驱动程序，那么
 同时阅读一下:
 :ref:`Documentation/process/submitting-drivers.rst <submittingdrivers>`