fixing parentheses mismatch in the getting started guide.
fixing parentheses mismatch in the getting started guide.

valery1707/dropwizard-metrics,mveitas/metrics,Banno/metrics,dropwizard/metrics,mnuessler/metrics,bentatham/metrics,dropwizard/metrics,slachiewicz/metrics,mspiegel/metrics,mt0803/metrics,infusionsoft/yammer-metrics,AltitudeDigital/metrics,fcrepo4-archive/metrics,fcrepo4-archive/metrics,jasw/metrics,unitsofmeasurement/metrics,ChetnaChaudhari/metrics,thelastpickle/metrics,cirrus-dev/metrics,ind9/metrics,dropwizard/metrics,mattnelson/metrics,egymgmbh/metrics,signalfx/metrics,mveitas/metrics,randomstatistic/metrics,wfxiang08/metrics,mtakaki/metrics,rexren/metrics,timezra/metrics,ohr/metrics,infusionsoft/yammer-metrics,jplock/metrics,gburton1/metrics,slovdahl/metrics,kevintvh/metrics,tempredirect/metrics,chenxianghua2014/metrics,gburton1/metrics