Update README.md

Author: carloBarazzetta

README.md

@@ -24,7 +24,7 @@ begin
   EdgeGoogleMapViewer.MapTypeId := TGoogleMapTypeId(MapTypeIdComboBox.ItemIndex);
   
 ```
-A complete demo is available!
+## A complete demo is available!
 
 Notice that in the same folder of the executable you must place the correct webview2loader.dll (32 or 64 bit) as you can see into Demo\GoogleMaps\Bin\Win32 and Demo\GoogleMaps\Bin\Win64.