HexDocs is a place for Hex packages to host their documentation.
To find documentation sets on HexDocs, you can go to the following URLs:
http://hexdocs.pm/<package>/ - Latest documentation set for
http://hexdocs.pm/<package>/<version> - Documentation set for
You can also find documentation sets in the release section of package pages on Hex.pm
You can find out how to publish documentation to HexDocs here.