Patches for documentation that reside in tree (link to svn.osuosl.org) are generally accepted. Patches can be submitted to the mailing lists, see http://osuosl.org/projects/maintain/ for the instructions on subscribing to the mailing list.
All other documentation will reside here on the wiki and can be easily edited.
Maintain 2.6 Documentation
Nightly builds of the Maintain 2.6 documentation (unorganized) will be available in the following location: Maintain-2.6 Doc
Or, you can browse the source tree and run AsciiDoc conversions yourself: Documentation