Idea: Website team members page could have separate section for `PMC Chair: Jia Yu`

On the Apache CloudStack website team members page they start with an overview of `PMC Chair: Nicolás Vázquez` then list the PMC members and then list the Committers.

So we could have a section for @jiayuasu

https://projects.apache.org/committee.html?sedona

Full example at the next link:

https://cloudstack.apache.org/who

Start with the Sedona website's team members page and compare its current structure with the linked Apache CloudStack example and committee page. Add a separate PMC Chair section naming Jia Yu, then verify the rendered page shows that section before the PMC members and Committers.

Written by the indexing model from the issue text.