Pontoon: Update Vietnamese (vi) localization of AMO
Pontoon: Update Vietnamese (vi) localization of AMO

Co-authored-by: Quế Tùng <8d73b2e17c5d12944b4c5ae79226d0b18e19b972@gmail.com>

wagnerand/addons-server,diox/olympia,wagnerand/addons-server,diox/olympia,wagnerand/addons-server,diox/olympia,wagnerand/addons-server,mozilla/addons-server,mozilla/addons-server,mozilla/addons-server,diox/olympia,mozilla/addons-server