Update README.md

Author: Abin-Packt

README.md

@@ -1,6 +1,6 @@
 # Mastering GUI Programming with Python
 
-<a href="https://www.packtpub.com/application-development/mastering-gui-programming-python"><img src="https://www.packtpub.com/application-development/mastering-gui-programming-python" alt="Mastering GUI Programming with Python" height="256px" align="right"></a>
+<a href="https://www.packtpub.com/application-development/mastering-gui-programming-python"><img src="https://www.packtpub.com/media/catalog/product/cache/e4d64343b1bc593f1c5348fe05efa4a6/b/1/b12831.png" alt="Mastering GUI Programming with Python" height="256px" align="right"></a>
 
 This is the code repository for [Mastering GUI Programming with Python](https://www.packtpub.com/application-development/mastering-gui-programming-python), published by Packt.