Always quote the user + add links to the release support policy (#43810)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/43810

This bot never works because facebook bot is faster.
I'm updating the logic to always publish the thank you message + update the link with the correct one.

Changelog:
[Internal] [Changed] - Always quote the user + add links to the release support policy

Reviewed By: rshest, cipolleschi

Differential Revision: D55643675

fbshipit-source-id: d2e726580c82d7f89b37d17846675b7c4c38e908