Fixed typo
Fixed typo

There was a wrongly placed single-quote in README
eiriksm/vantage,broguinn/vantage,Drooids/vantage,Ryan-McBride/vantage,brollb/vantage,MeanderingCode/vantage,joe-adams/vantage,esnunes/vantage,e-jigsaw/vantage,beni55/vantage,johnpancoast/vantage,josephyzhou/vantage,Nomakk6/vantage,dthree/vantage,curtiszimmerman/vantage,rakesh-mohanta/vantage,mengmenglv/vantage,bradparks/vantage