docs/zh_CN: change my own email address

The previous email address was abandoned due to some reasons by myself, and
thus shift the email contents mentioned from the old email address
(src.res@email.cn) to the current version (src.res.211@gmail.com).

Signed-off-by: Hu Haowen <src.res.211@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230707160119.26873-1-src.res.211@gmail.com