docs/zh_CN: Modify the translator tag and fix the wrong word

docs/zh_CN: Modify the translator tag and fix the wrong word

Fix a wrong word;

Fix old Original tag;

Remove unnecessary blank lines;

Modify the translator tag to be consistent with the current.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/20210821081800.2205103-1-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>