WIP zh.po (#2454)
WIP zh.po (#2454)

* Update zh.po

* Apply suggestions from code review

openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server