Pontoon: Update Greek (el) localization of Firefox Screenshots
Pontoon: Update Greek (el) localization of Firefox Screenshots

Localization authors:
- Alfredos-Panagiotis Damkalis <fredy@fredy.gr>
- Μιχάλης <mikem132@protonmail.com>

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