Autobahn is an open source project, and hosted on GitHub. The GitHub repository includes the documentation.
We’re looking for all kinds of contributions - from simple fixes of typos in the code or documentation to implementation of new features and additions of tutorials.
If you want to contribute to the code or the documentation:
We use the Fork & Pull Model.
This means that you fork the repo, make changes to your fork, and then make a pull request here on the main repo.
This article on GitHub gives more detailed information on how the process works.