[This repository][0] is currently live on <https://patchdemo.wmcloud.org>;
however, the live links point to the repository and issue tracking for
the [ci-tools patchdemo][1].

Update links from the patchdemo website to point to the currently live
repo + issue tracking in phabricator.

[0]: <https://gitlab.wikimedia.org/repos/qte/catalyst/patchdemo>
[1]: <https://gitlab.wikimedia.org/repos/ci-tools/patchdemo>

Change-Id: I1a588c34ec8cb523fee22099970ded548791afc1