Revise Copilot CLI for Beginners section (#1334)

Updated the description for Copilot CLI for Beginners to include options for a text-based experience and a YouTube video series.

Author: GeekTrainer

website/src/content/docs/learning-hub/index.md

@@ -24,6 +24,5 @@ and examples you can use right away.
 
 ## Copilot CLI for Beginners
 
-Looking for a guided path into GitHub Copilot from the terminal? Start with
-[Copilot CLI for Beginners](cli-for-beginners/) for a course overview,
-then work through chapters 00 through 07 at your own pace.
+Looking for a guided path into GitHub Copilot from the terminal? Explore Copilot CLI for Beginners! You can work through a 
+[text based experience](cli-for-beginners/) for a text-based experience, or the [YouTube video series](https://www.youtube.com/watch?v=BDxRhhs36ns&list=PL0lo9MOBetEHvO-spzKBAITkkTqv4RvNl).