WEB: Update Python for Data Analysis book (pandas-dev#48491)

* WEB: Update Python for Data Analysis book

* Add small image

* Change back to gif

Author: mroeschke

web/pandas/getting_started.md

@@ -51,10 +51,10 @@ and more about JupyterLab in the
 
 ## Books
 
-The book we recommend to learn pandas is [Python for Data Analysis](https://amzn.to/2KI5JJw),
+The book we recommend to learn pandas is [Python for Data Analysis](https://amzn.to/3DyLaJc),
 by [Wes McKinney](https://wesmckinney.com/), creator of pandas.
 
-<a href="https://amzn.to/2KI5JJw">
+<a href="https://amzn.to/3DyLaJc">
     <img alt="Python for Data Analysis" src="{{ base_url }}/static/img/pydata_book.gif"/>
 </a>
 

web/pandas/index.html

@@ -87,7 +87,7 @@ <h4>Follow us</h4>
                 </div>
 				<h4>Get the book</h4>
 				<p class="book">
-					<a href="https://amzn.to/2KI5JJw">
+					<a href="https://amzn.to/3DyLaJc">
 						<img class="img-fluid" alt="Python for Data Analysis" src="{{ base_url }}/static/img/pydata_book.gif"/>
 					</a>
 				</p>