- Requests URL using https instead of http
- Avoids unnecessary redirect of *.rtfd.org -> *.readthedocs.io
*.rtfd.org exists as a means for pasting short URLs, which doesn't much
apply for links in documentation.
As per their email ‘Changes to project subdomains’:
> Starting today, Read the Docs will start hosting projects from subdomains on the domain readthedocs.io, instead of on readthedocs.org. This change addresses some security concerns around site cookies while hosting user generated data on the same domain as our dashboard.
Test Plan: Manually visited all the links I’ve modified. One was not modified - `http://media.readthedocs.org/epub/pytest/latest/pytest.epub` - since it doesn't work on `readthedocs.io`.
