removed the level 2 py videos header and added respective video title headers

Author: ParthJohri

docs/source/knowledgebase/causal_video_resources.md

@@ -1,6 +1,5 @@
 # Causal video resources
 
-## PyMC Videos
 
 <style>
 .video-container {
@@ -22,14 +21,26 @@
 }
 </style>
 
+## What if Causal reasoning meets Bayesian Inference
+
+<div class="video-container">
+    <iframe src="https://www.youtube.com/embed/gV6wzTk3o1U" title="YouTube video player" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
+</div>
+
+## Combining Bayes and Graph-based Causal Inference
+
 <div class="video-container">
     <iframe width="560" height="315" src="https://www.youtube.com/embed/0PQ8BQaDP04?si=O4qb44OBDVn8gqHP" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 </div>
-<br>
+
+## Bayesian Causal Modeling
+
 <div class="video-container">
     <iframe width="560" height="315" src="https://www.youtube.com/embed/b47wmTdcICE?si=aXufYM8AiHZAQ9Q0" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 </div>
-<br>
+
+## Thomas Wiecki's Guide To Causal Inference Using PyMC
+
 <div class="video-container">
     <iframe width="560" height="315" src="https://www.youtube.com/embed/QAzAFess1AA?si=zD6PrljOFUyvjm1I" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 </div>