misc. typo fix in example description
misc. typo fix in example description

Kollibri/angular-esri-map,minggangshao/angular-esri-map,minggangshao/angular-esri-map,walnuthe/angular-esri-map,tomwayson/angular-esri-map,Esri/angular-esri-map,Kollibri/angular-esri-map,walnuthe/angular-esri-map,Kollibri/angular-esri-map,tomwayson/angular-esri-map,tomwayson/angular-esri-map,Esri/angular-esri-map,Esri/angular-esri-map,minggangshao/angular-esri-map,walnuthe/angular-esri-map