Amend example to use 7.2 Routing service

Author: jason-fox

map-with-truck-route-from-a-to-b/js/app.js

@@ -10,7 +10,7 @@
  * @param   {H.service.Platform} platform    A stub class to access HERE services
  */
 function calculateRouteFromAtoB (platform) {
-  var router = platform.getEnterpriseRoutingService(),
+  var router = platform.getRoutingService(),
     routeRequestParams = {
       mode: 'fastest;truck',
       representation: 'display',
@@ -250,4 +250,4 @@ Number.prototype.toMMSS = function () {
 }
 
 // Now use the map as required...
-calculateRouteFromAtoB (platform);
+calculateRouteFromAtoB (platform);