Merge pull request #297115 from anishtrakru/dtl-dev-com-forum-link

Update Azure DevTest Labs Developer Community Forum

Author: AnnaMHuff

articles/devtest-labs/TOC.yml

@@ -277,4 +277,4 @@
   - name: Pricing
     href: https://azure.microsoft.com/pricing/details/devtest-lab/
   - name: DevTest Labs Developer Community
-    href: https://aka.ms/dtl/communityforum
+    href: https://aka.ms/dtl/developer-community-forum