Zk authorization upgrade caused service fake death issue, and updated document FAQ issue.

[zjx990]

Fixes #2249

更新FAQ文档 zk授权升级出现假死的现象和解决办法。

[linghengqian]

• Please use English for commit information and PR titles, as this will help others search.

[zjx990]

• Please use English for commit information and PR titles, as this will help others search.

ok

[linghengqian]

• @zjx990 Your commit information has not been changed, please change zk授权升级导致服务假死问题,文档FAQ问题更新。 to Update FAQ document about service fake death or other word. This can be achieved by fixing the local previous commit and then forcing push to the remote branch.