chore(content): corrected link to SmartR videos

frozen/smartr.md

@@ -29,7 +29,7 @@ All available documentation can be found [here](https://github.com/transmart/Sma
 
 
 {%  rblock Videos | fas fa-video %}
-Several videos have been recorded to showcase the capabilities of SmartR. They can be accessed via [YouTube](https://www.youtube.com/channel/UC0LP15lmuMkgYYLaFj3SKew).
+Several videos have been recorded to showcase the capabilities of SmartR. They can be accessed via [YouTube](https://www.youtube.com/playlist?list=PLNvp9GB9uBmH79puxxIHh9TOwQHTA_Ucy).
 {% endrblock %}
 {% endrgridblock %}