url update (#146)

README.md

@@ -2,7 +2,7 @@
 
 Use our starter application template using the NextJS framework.
 
-View a scene, apply camera states, and see a scene item's metadata. We built this application following best practices for integrating the Vertex platform. [Follow our guide](http://localhost:3000/docs/guides/build-your-first-app) to build a foundation, then add functionality to create your own prototype application using Vertex.
+View a scene, apply camera states, and see a scene item's metadata. We built this application following best practices for integrating the Vertex platform. [Follow our guide](http://developer.vertex3d.com/docs/guides/build-your-first-app) to build a foundation, then add functionality to create your own prototype application using Vertex.
 
 ## Run locally in Docker