Pontoon: Update Japanese (ja) localization of Firefox Screenshots
Pontoon: Update Japanese (ja) localization of Firefox Screenshots

Localization authors:
- marsf <chimantaea_mirabilis@yahoo.co.jp>

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