Update module title in Private Link Service demo

Author: staleycyn

Instructions/Demos/Private Link Service.md

@@ -1,7 +1,7 @@
 ---
 demo:
     title: 'Private Endpoint and Private Link Service (Module 07)'
-    module: 'Demo: Design and implement private access to Azure Services'
+    module: 'Module 07: Design and implement private access to Azure Services'
 ---
 In this demonstration review configuring a private endpoint.