Update link to blog

Author: anzaman

articles/programmable-connectivity/toc.yml

@@ -37,4 +37,4 @@
   - name: Azure Roadmap
     href: https://azure.microsoft.com/roadmap/?category=networking
   - name: Blog
-    href: https://aka.ms/AzureProgrammableConnectivity
+    href: https://techcommunity.microsoft.com/t5/azure-for-operators-blog/azure-programmable-connectivity-empowering-the-next-generation/ba-p/4063967