Updating azlabs resources

Author: EMaher

articles/lab-services/TOC.yml

@@ -323,5 +323,5 @@
     href: https://azure.microsoft.com/pricing/details/lab-services/
   - name: Q & A
     href: https://aka.ms/azlabs/questions
-  - name: Tech community forum
-    href: https://techcommunity.microsoft.com/t5/azure-lab-services/bd-p/AzureLabServices
+  - name: Code samples
+    href: https://github.com/Azure/LabServices