Pontoon: Update Burmese (my) localization of Firefox Screenshots
Pontoon: Update Burmese (my) localization of Firefox Screenshots

Localization authors:
- La Min Ko (လမင်းကို) <lminko.lmk@gmail.com>

mozilla-services/screenshots,mozilla-services/screenshots,mozilla-services/screenshots,mozilla-services/pageshot,mozilla-services/pageshot,mozilla-services/pageshot,mozilla-services/screenshots,mozilla-services/pageshot