Add youtube link to compiler talk

Author: fhammerschmidt

_blogposts/2024-07-08-retreat-recap.mdx

@@ -43,7 +43,7 @@ Furthermore, the comments table was explained. As comments are not part of the A
 
 The full talk has been recorded and can be watched here: [TODO - Youtube Link].
 
-### Brief overview of compiler development
+### Intro to compiler development
 
 A talk by Cristiano Calcagno ([@ccrisccris](https://x.com/ccrisccris))
 
@@ -59,7 +59,7 @@ The next layer is the raw lambda tree, which is the last layer before code gener
 
 The final layer is the JS dump, which is the actual JavaScript code generation.
 
-Again, the full talk has been recorded and can be watched here: [TODO - Youtube Link].
+Again, the full talk has been recorded and can be watched here: [Youtube Link](https://youtu.be/sQinTXDynew?si=AihxJBQDEyzMCvFz).
 
 ### Beginning of group work