docs/zh_CN: Update the translation of mm-api to 6.1-rc8

Update to commit def76fd5 ("mm/page_alloc: remove
obsolete gfpflags_normal_context()").

Commit 7343f2b0 ("headers/deps: mm: align
MANITAINERS and Docs with new gfp.h structure")

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Wu XiangCheng <bobwxc@email.cn>
Link: https://lore.kernel.org/r/66edf54c706aaf416b5a59c0169a989a7c803e1f.1670642548.git.siyanteng@loongson.cn


Signed-off-by: Jonathan Corbet <corbet@lwn.net>