improve Chuvash translation
improve Chuvash translation

Tyvonne/MagicMirror,MichMich/MagicMirror,Tyvonne/MagicMirror,Tyvonne/MagicMirror,MichMich/MagicMirror,MichMich/MagicMirror,Tyvonne/MagicMirror,MichMich/MagicMirror