User Feedback 433847: Fix Python syntax per UUF feedback

Author: gitName

learn-pr/github/introduction-to-github-copilot/includes/3-interacting-with-copilot.md

@@ -92,7 +92,7 @@ def reverse_string(s):
 ```
 
 ```python
-// Function to reverse a string
+## Function to reverse a string
 def reverse_string(s):
     return s[::-1]
 ```