Update README.md

Author: om-chauhan

README.md

@@ -6,7 +6,7 @@ E-Commerce App - fetch data from Rest Api (Demo Purpose).
 
 ## Demo App
 
-- [Demo Ap](demo_apk\app-release.apk)
+- [Demo Ap](https://github.com/om-chauhan/Super-Store-Ecommerce-App-using-REST-Api-in-Flutter/releases/download/v1.0/app-release.apk)
 
 ## Getting Started