update ar translation
update ar translation

Change-Id: If3fa475c2bfe1f5e77f9cffd13fec97f52e77b9a

sfu/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,roxolan/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,fronteerio/canvas-lms,djbender/canvas-lms,HotChalk/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,redconfetti/canvas-lms,roxolan/canvas-lms,fronteerio/canvas-lms,roxolan/canvas-lms,snehakachroo1/LSI_replica,dgynn/canvas-lms,snehakachroo1/LSI_replica,roxolan/canvas-lms,snehakachroo1/LSI_replica,dgynn/canvas-lms,instructure/canvas-lms,dgynn/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,redconfetti/canvas-lms,fronteerio/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,dgynn/canvas-lms,sfu/canvas-lms,redconfetti/canvas-lms,HotChalk/canvas-lms,grahamb/canvas-lms,HotChalk/canvas-lms,matematikk-mooc/canvas-lms,djbender/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,SwinburneOnline/canvas-lms,HotChalk/canvas-lms,snehakachroo1/LSI_replica,matematikk-mooc/canvas-lms,matematikk-mooc/canvas-lms,venturehive/canvas-lms,redconfetti/canvas-lms,venturehive/canvas-lms,matematikk-mooc/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,djbender/canvas-lms