README: links fixed

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

README.md

@@ -88,7 +88,7 @@ If you want these as web (GitHub URL) links or added to a separate markdown inde
 
 You can find video walkthroughs for many of these workflows in my dedicated playlist:
 
-[![n8n Playlist](https://www.samirsaci.com/content/images/size/w1600/2025/11/image-9.png)](https://bit.ly/playlist-n8n-supplyscience)
+[![n8n Playlist](https://www.samirsaci.com/content/images/size/w1600/2025/11/image-9.png)](https://www.youtube.com/playlist?list=PLvINVddGUMQWK6JVR35KPXu-GmOfcd0RP)
 
 ## 👋 About Me