Update index.html

Author: cfgranda

docs/index.html

@@ -43,8 +43,8 @@ <h1>Probability and Statistics for Data Science</h1>
 
 										<ul>
   <li><a href="https://github.com/cfgranda/ps4ds/blob/main/ps4ds_preprint.pdf">A free preprint</a></li>
-  <li><a href="https://github.com/cfgranda/ps4ds/">102 Python notebooks using 23 real-world datasets</a></li>
-  <li><a href="https://youtube.com/playlist?list=PLBEf5mJtE6KuZ5NBQMuWIMsiOOrV9ibzm&si=ap_iT1AV5AjER6RJ">117 videos with slides</a></li>
+  <li><a href="https://github.com/cfgranda/ps4ds/">103 Python notebooks using 23 real-world datasets</a></li>
+  <li><a href="https://youtube.com/playlist?list=PLBEf5mJtE6KuZ5NBQMuWIMsiOOrV9ibzm&si=ap_iT1AV5AjER6RJ">118 videos with slides</a></li>
   <li><a href="https://github.com/cfgranda/ps4ds/blob/main/ps4ds_solutions.pdf">Solutions to 200 exercises</a></li>
 </ul>
 	</p>