fix link to demo file
fix link to demo file

kentcdodds/keymaster,atomic-app/keymaster,greyhwndz/keymaster,madrobby/keymaster,tj/keymaster,MOODOO-SH/keymaster,pandoraui/keymaster,nelsonic/keymaster,greyhwndz/keymaster,harvesthq/keymaster,quizlet/keymaster,quizlet/keymaster,pandoraui/keymaster,relax/keymaster,madrobby/keymaster,relax/keymaster,nelsonic/keymaster,MOODOO-SH/keymaster,RubaXa/keymaster,atomic-app/keymaster