docs/zh_CN: core-api: Add errseq Chinese translation

Translate core-api/errseq.rst into Chinese.

Last English version used:

commit 14ebc28e ("errseq: Add to documentation tree").

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Wu XiangCheng <bobwxc@email.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/bd81bd620eb6c64effd2d0d52831f39911fc1659.1666171735.git.zhoubinbin@loongson.cn


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