Oncall report from Jan.2nd to Jan.8th

[Jiashun Zhu]

Hi, all

During the last week, the following 2 PRs were merged:

* Rollback #2049 change #2076
https://github.com/apache/incubator-brpc/pull/2076
* fix some typos #2075 https://github.com/apache/incubator-brpc/pull/2075