Update governance document

[sunxiaoguang]

Due to the fact that the governance document has been outdated for some time. I hereby propose a refresh of governance document according to the new affiliations of steering committee members and infra members.

The changes are:

• Clear steering committee member Jay Li's affiliation based on his own preference.
• Replace infra members, Zili Chen and Qiang Zhou, to Junchen Ye and Wuhui Zuo.

Please make comments if you have any concern, thanks

[winkyao]

+1