Update index.ts (#402)

Makes a small change to test the new approve-merge changes.

Author: willum070

samples/add-map/index.ts

@@ -9,7 +9,7 @@
 let map;
 async function initMap(): Promise<void> {
   // [START maps_add_map_instantiate_map]
-  // The location of Uluru
+  // The location of Uluru.
   const position = {lat: -25.344, lng: 131.031};
 
   //  Request needed libraries.