Add link to howto's
Recently we added a new category "howto" to discuss.tryton.org, I think we should link to it in the forum page.
This instance will be upgraded to Heptapod 1.3.1 (GitLab 16.9.3) on 2023-03-28 at 17:00 UTC+1
Recently we added a new category "howto" to discuss.tryton.org, I think we should link to it in the forum page.