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

Localization authors:
- Marcelo Poli <enzomatrix@gmail.com>

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