chore(common): update the embed to be the playilst

Author: marin-bratanov

introduction.md

@@ -20,7 +20,7 @@ Telerik UI for Blazor supports both Client-side Blazor and Serve-side Blazor app
 
 If you are not familiar with Blazor yet, you may find useful our Blazor Quick Start Guide videos:
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/aaRAZYaJ4xc" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/videoseries?list=PLvmaC-XMqeBYPTwcm478vs8Rujq2tiVJo" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 If you are new to Telerik UI for Blazor, we recommend that you **follow the First Steps articles** to add the Telerik components to your application: