Pontoon: Update Nias (nia) localization of Common Voice
Pontoon: Update Nias (nia) localization of Common Voice

Co-authored-by: Sirus Laia <9b3208ac40caba3a98ceda1ea39ed740856b1212@gmail.com>

common-voice/common-voice,common-voice/common-voice,common-voice/common-voice,common-voice/common-voice