Merge pull request #95959 from vhorne/ag-dupeh1

delete dupe article

Author: v-albemi

.openpublishing.redirection.json

@@ -4776,6 +4776,11 @@
       "redirect_url": "/azure/app-service-mobile",
       "redirect_document_id": false
     },
+    {
+      "source_path": "articles/application-gateway/application-gateway-multi-site-overview.md",
+      "redirect_url": "/azure/application-gateway/multiple-site-overview",
+      "redirect_document_id": false
+    },
     {
       "source_path": "articles/application-gateway/application-gateway-crs-rulegroups-rules.md",
       "redirect_url": "/azure/web-application-firewall/ag/application-gateway-crs-rulegroups-rules",