doc/zh_CN: fix a translation error in management-style

'The name of the game' means the most important part of an activity, so
we should translate it by the meaning instead of the words.

Suggested-by: Xinyong Wang <wang.xy.chn@gmail.com>
Signed-off-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>