fix(demo): Update style URL (#222)

Co-authored-by: Stanis Trendelenburg <[email protected]>

Author: trendels

index.html

@@ -56,7 +56,7 @@
       fetch('https://developer.geops.io/publickey')
         .then((response) => response.json())
         .then(function(data = {}) {
-          mbMap.setStyle('https://maps.geops.io/styles/travic/style.json?key=' + data.key)
+          mbMap.setStyle('https://maps.geops.io/styles/travic_v2/style.json?key=' + data.key)
       });
 
       // Code taken from https://openlayers.org/en/latest/examples/mapbox-layer.html