Update bad-to-the-bone link

Author: Jason Kridner

README.htm

@@ -417,7 +417,7 @@ <h2 id="books">Books</h2>
 <p>For a complete list of books on BeagleBone, see
 <a href="https://beagleboard.org/books">beagleboard.org/books</a>.</p>
 <div style="display:table;"><div style="display:table-cell;padding:10px;">
-<iframe style="width:120px;height:240px;marginwidth:0;marginheight:0;" frameborder="0" src="https://amzn.to/1bGhKdd">
+<iframe style="width:120px;height:240px;marginwidth:0;marginheight:0;" frameborder="0" src="https://amzn.to/2q74qeg">
 </iframe>
 </div><div style="display:table-cell;padding:10px;">
 <iframe style="width:120px;height:240px;marginwidth:0;marginheight:0;" frameborder="0" src="https://amzn.to/1DYDyHI">

START.htm

@@ -417,7 +417,7 @@ <h2 id="books">Books</h2>
 <p>For a complete list of books on BeagleBone, see
 <a href="https://beagleboard.org/books">beagleboard.org/books</a>.</p>
 <div style="display:table;"><div style="display:table-cell;padding:10px;">
-<iframe style="width:120px;height:240px;marginwidth:0;marginheight:0;" frameborder="0" src="https://amzn.to/1bGhKdd">
+<iframe style="width:120px;height:240px;marginwidth:0;marginheight:0;" frameborder="0" src="https://amzn.to/2q74qeg">
 </iframe>
 </div><div style="display:table-cell;padding:10px;">
 <iframe style="width:120px;height:240px;marginwidth:0;marginheight:0;" frameborder="0" src="https://amzn.to/1DYDyHI">