en to zh-Hans translation catalogue (3 entries)

note: (itstool) path: publisher/publishername
en: MATE Documentation Project
zh-Hans: MATE 文档项目

note: (itstool) path: publisher/publishername
en: GNOME Documentation Project
zh-Hans: GNOME 文档项目

note: (itstool) path: revision/author
en: <firstname>MATE Documentation Project</firstname> <surname/>
zh-Hans: <firstname>MATE 文档项目</firstname><surname/>
