Pontoon: Update Acholi (ach) localization of Thimble
Pontoon: Update Acholi (ach) localization of Thimble

Localization authors:
- denish <denish@mozilla-uganda.org>

mozilla/thimble.mozilla.org,humphd/thimble.mozilla.org,humphd/thimble.mozilla.org,mozilla/thimble.mozilla.org,mozilla/thimble.mozilla.org,mozilla/thimble.mozilla.org,humphd/thimble.mozilla.org,humphd/thimble.mozilla.org