Pontoon: Update Arabic (ar) localization of Firefox Screenshots
Pontoon: Update Arabic (ar) localization of Firefox Screenshots

Localization authors:
- صفا الفليج <safa1996alfulaij@gmail.com>

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