This means that forum members will be able to edit/create documentation pages themselves, according to the trust level system built into Discourse. Because the web site will be updated automatically, the docs have effectively become a wiki.
The documentation now resides under the Docs category. There is a pinned topic that acts as the table of contents. The sub-category Docs-discuss is to be used for documentation-related subjects (stuff that is not intended to be published on the web site).
Documentation issues are still managed by this GitHub repository however.
This transition occurred on March 14, 2019. Please see Discourse topic Documentation migrated to Discourse for more information on how the new system works.
Thank you for your interest in Juju documentation.