Broken links in documentation

[vaustrup]

Describe the bug
Links to and inside documentation pages are broken

To Reproduce
Clicking on e.g. the link to the schema objects documentation in https://coffea-hep.readthedocs.io/en/latest/notebooks/nanoevents.html gives a 404 error.

Expected behavior
The link points to https://coffeateam.github.io/coffea/modules/coffea.nanoevents.html#classes, when it should point to https://coffea-hep.readthedocs.io/en/latest/modules/coffea.nanoevents.html#classes.

I assume all links to coffeateam.github.io/coffea should be replaced by coffea-hep.readthedocs.io/en/latest. I have found such links in the Contributors guidelines, the README, and some of the binder notebooks.

[lgray]

Ahhh thanks for the catch!