Fix another potential str.replace gotcha.
Fix another potential str.replace gotcha.

Fixes #296. Thanks to James Murty for the catch.

felix-d/fabric,pgroudas/fabric,xLegoz/fabric,cmattoon/fabric,bspink/fabric,itoed/fabric,askulkarni2/fabric,tekapo/fabric,kmonsoor/fabric,hrubi/fabric,TarasRudnyk/fabric,pashinin/fabric,mathiasertl/fabric,akaariai/fabric,cgvarela/fabric,haridsv/fabric,fernandezcuesta/fabric,sdelements/fabric,likesxuqiang/fabric,MjAbuz/fabric,tolbkni/fabric,rbramwell/fabric,amaniak/fabric,kxxoling/fabric,opavader/fabric,bitmonk/fabric,bitprophet/fabric,jaraco/fabric,rane-hs/fabric-py3,getsentry/fabric,raimon49/fabric,qinrong/fabric,SamuelMarks/fabric,ploxiln/fabric,rodrigc/fabric,StackStorm/fabric,elijah513/fabric