Update README.md

Author: sudharsan13296

README.md

@@ -7,7 +7,7 @@
 
 
 ## About the book
-<a target="_blank" href="https://www.amazon.com/dp/B079Q3WLM4/ref=sr_1_1?ie=UTF8&qid=1518175121&sr=8-1&keywords=hands+on+reinforcement+learning+with+python">
+<a target="_blank" href="https://www.packtpub.com/big-data-and-business-intelligence/hands-reinforcement-learning-python">
  <img src="https://github.com/sudharsan13296/Hands-On-Reinforcement-Learning-With-Python/blob/master/images/book_cover.jpg" alt="Book Cover" width="250" align="left"/>
 </a>