Update README.md

Author: vukan-markovic

README.md

@@ -10,8 +10,6 @@ After each level, the number of balloons increases as well as the speed at which
 
 [Link to the Amazon Appstore](http://a.co/d/cdEIqmh)
 
-[Documentation](https://vukan-markovic.github.io/Pop_Balloon/)
-
 ## Screenshots:
 
 ![Google Play Game Sign-in](https://lh3.googleusercontent.com/D3uIdTP8ifhI-QkEAAsEgu0z42Naufg0DaDoXj0iG7OvaZemGNhrDjQu33ZWvIlR7g=w1280-h699-rw)