Show repo link and Edit link

In psf/blog we show GH and 'edit this page on gh'

<img width="1145" height="148" alt="Image" src="https://github.com/user-attachments/assets/8be03c09-e106-4982-aaac-2ab80e380dbb" />
https://github.com/psf/blog

code is mostly the same so it should just be a copypasta