Update contributors.rst
Update contributors.rst

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