Fixing ref in [run project] button url

Author: gullitmiranda

README.md

@@ -6,7 +6,7 @@
 
 Click the button bellow to quickly and safely install this project on your local machine.
 
-[![Run project](https://s3-sa-east-1.amazonaws.com/assets.azk.io/run-project.png)](http://run.azk.io/start/?repo=azukiapp/azkdemo#azkfile)
+[![Run project](https://s3-sa-east-1.amazonaws.com/assets.azk.io/run-project.png)](http://run.azk.io/start/?repo=azukiapp/azkdemo&ref=azkfile)
 
 The `Run Project` button employs `azk`, a lightweight open source orchestration tool that will automatically isolate and configure the application's environment for you.