Update lab environment configuration

Remove 'islab' field from lab environment configuration.

Author: ChrisHowd

Instructions/Labs/LAB_AK_00_configure_lab_environment.md

@@ -4,9 +4,9 @@ lab:
   description: Review lab requirements and configure resources before starting GitHub Copilot exercises.
   duration: 15 minutes
   level: 100
-  islab: false
   primarytopics:
     - GitHub
+    - Visual Studio Code
 ---
 
 # Configure your lab environment for GitHub Copilot exercises