fix multiple cloze tags contained on one line
fix multiple cloze tags contained on one line

inner regex was capturing multiple clozes. fixes
https://anki.tenderapp.com/discussions/ankidesktop/6599-empty-cards-3533-cards-to-delete

go38/anki,holycrepe/anki,jakesyl/ruby-card,weihautin/anki,weihautin/anki,hssm/anki,socialpercon/anki-1,Arthaey/anki,hssm/anki,kenjhim/anki,florianjacob/anki,eduOS/anki,subfusc/anki,ospalh/libanki3,jkitching/anki,jakesyl/ruby-card,sunclx/anki,LucasCabello/anki,xuewenfei/anki,Stvad/anki,abeyer/anki