fixed git repo in README.md (!19) · Merge requests · libre.sh / compose / Discourse · GitLab

Rosenkranz requested to merge Rosenkranz/discourse:Rosenkranz-master-patch-62995 into master Jan 15, 2022

the git repo has moved to https://lab.libreho.st/libre.sh/compose/discourse.git However the link was not updatet in the documentation