python-requests.org domain expired. Update links

[bauripalash]

More on here -> https://github.com/psf/requests/issues/6140

[tedmiston]

+1

Clicking the repo link (which points to http://html.python-requests.org/) gives this:

[tedmiston]

I found other issues pointing to docs deployed at https://requests.readthedocs.io/projects/requests-html/en/latest/.

Not sure if that source is up-to-date though.

[surister]

Everything seems fixed now :P