add redirect for afdx to afd sample templates

Author: duongau

.openpublishing.redirection.json

@@ -398,6 +398,11 @@
       "redirect_url": "/articles/load-balancer/concepts",
       "redirect_document_id": false
     },
+    {
+      "source_path_from_root": "/articles/frontdoor/standard-premium/resource-manager-template-samples.md",
+      "redirect_url": "/articles/frontdoor/front-door-quickstart-template-samples",
+      "redirect_document_id": false
+    },
     {
       "source_path_from_root": "/articles/azure-sql/database/doc-changes-updates-release-notes.md",
       "redirect_url": "/azure/azure-sql/database/doc-changes-updates-release-notes-whats-new",