Ex13 and Ex14 - updated descriptions in the header section

Author: ChrisHowd

Instructions/Labs/LAB_AK_13_implement-spec-driven-development.md

@@ -1,7 +1,7 @@
 ---
 lab:
     title: 'Exercise - Implement a product feature using GitHub Spec Kit'
-    description: 'Learn how to implement a spec-driven development process using GitHub Spec Kit and GitHub Copilot in Visual Studio Code.'
+    description: 'Learn how to add new features to existing applications using GitHub Spec Kit workflows, Visual Studio Code, and GitHub Copilot.'
 ---
 
 # Implement a product feature using GitHub Spec Kit

Instructions/Labs/LAB_AK_14_get-started-spec-driven-development.md

@@ -1,8 +1,8 @@
-<!-- ---
+---
 lab:
     title: 'Exercise - Develop a greenfield application using GitHub Spec Kit'
-    description: 'Learn how to apply the spec-driven development methodology with GitHub Spec Kit for a greenfield application project. in Visual Studio Code.'
---- -->
+    description: 'Learn how to install GitHub Spec Kit and how to use GitHub Spec Kit workflows to implement the spec-driven development methodology for a greenfield application.'
+---
 
 # Develop a greenfield application using GitHub Spec Kit