docs/zh: Fix Cc, Co-developed-by, and Signed-off-by tags

The updates from commit ae67ee6c

 ("docs: fix Co-Developed-by
docs") in v5.0 were never applied to the Chinese translations.
In addition:
  - "Cc" used wrong case,
  - "Co-developed-by" lacked a dash,
  - "Signed-off-by" was misspelled.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Hu Haowen <2023002089@link.tyut.edu.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/22892a8ab5c17d7121ef5b85f7d18d8b1f41e434.1711715655.git.geert+renesas@glider.be