docs/zh_CN: update to latest submitting-patches.rst

Updated huge changes for this docs. Seems we forget this for decades.
And use local stub to pointer this 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>