Updates docs for the sliding window samples.
Updates docs for the sliding window samples.

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