There's recently been a discussion about the wiki and how we should continue to work on the documentation in general. One of my suggestions was to start giving users a clearer guideline how they are able to contribute to our documentation, before having a technical discussion around tools and wikis again.
I've now created a first version on such a guide that can be found here: https://github.com/spodkowinski/cassandra/blob/docs_gettingstarted/doc/source/development/documentation.rst As you can see there's a large part about using GitHub for editing on the page. I'd like to know what you think about that and if you'd agree to accept PRs for such purposes. I'd also like to add another section for committers that describes the required steps to actually publish the latest trunk to our website. I know that svn has been mentioned somewhere, but I would appreciate if someone either adds that section or just shares some details in this thread. Cheers!