Update licensing-model.md

Updated the JSON format for license keys in v14

Author: Aaen

14/umbraco-ui-builder/installation/licensing-model.md

@@ -61,9 +61,11 @@ Once you have received your license code it needs to be installed on your site.
 
 ```json
 "Umbraco": {
-  "Licenses": {
-    "Umbraco.UIBuilder": "YOUR_LICENSE_KEY"
-  }
+    "Licenses": {
+        "Products": {
+            "Umbraco.UIBuilder": "YOUR_LICENSE_KEY"
+         }
+  }    
 }
 ```