Update 8.12-to-8.13.md: gitlab version 8.13 wants gitlab-shell v3.6.7 (!10071) · Merge requests · GitLab.org / GitLab FOSS · GitLab

The source project of this merge request has been removed.

Dark Dragon requested to merge (removed):patch-10 into master Mar 18, 2017

Update documentation to correspond to code.