Pontoon: Update Chinese (China) (zh-CN) localization of AMO Frontend
Pontoon: Update Chinese (China) (zh-CN) localization of AMO Frontend

Localization authors:
- 新垣结衣松冈茉优长泽雅美门胁麦上野树里石原里美 <eloli@foxmail.com>

kumar303/addons-frontend,mozilla/addons-frontend,tsl143/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,tsl143/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,mozilla/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,tsl143/addons-frontend,tsl143/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend,aviarypl/mozilla-l10n-addons-frontend