You can add a URL in the long_description (e.g. to https://read-the-docs.readthedocs.org/ )
It'd be useful to mention that here:
Hi,Is it possible to create a documentation in the section with “Project Links” on the page describing a release on PyPI.org? That is, can I add some metadata to an sdist or wheel that would add an entry to that list, and if so how? I’m using setuptools to create the distribution artefacts.The reason I ask is that I currently use an index.html on pythonhosted.org that redirects to the real documentation because that adds a link to the documentation when looking at the release on pypi.python.org. That doesn’t work pypi.org.Ronald