minor fixes on the doc
minor fixes on the doc

shamyyl/Geocoder,geocoder-php/Geocoder,Nyholm/Geocoder,collmomo/Geocoder,arunlodhi/Geocoder,heatery/Geocoder,mubassirhayat/Geocoder,stof/Geocoder,geocoder-php/Geocoder,jollysean/Geocoder,tylerhebel/Geocoder,svrdlic/Geocoder,jmcclell/Geocoder,misterion/Geocoder,svrdlic/Geocoder,Nyholm/Geocoder