Pontoon: Update Spanish (Argentina) (es-AR) localization of Firefox Screenshots
Pontoon: Update Spanish (Argentina) (es-AR) localization of Firefox Screenshots

Localization authors:
- Joaquín Serna <bubuanabelas@cryptolab.net>

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