Thank you for checking; I wanted to bounce my response to the list
because others may be in a similar situation of wanting to make Chair
or documentation updates to the SIGs docs in the TC repo.

Any contributor can propose changes to the SIG docs that are maintained here:

https://opendev.org/openstack/governance/src/branch/master/reference/sigs

In your case, you'd fix up the "chairs" and "status" for the Public
Cloud SIG in https://opendev.org/openstack/governance/src/branch/master/reference/sigs/sigs.yaml

and submit your change through the OpenDev Gerrit. There is a bunch of
one-time setup that's documented here:
https://docs.openstack.org/contributors/code-and-documentation/quick-start.html.
Please feel free to reach out if you have any questions.