fix spacing in existing last entry of redirects file

Author: ktoliver

.openpublishing.redirection.json

@@ -52274,10 +52274,10 @@
       "redirect_url": "/azure/azure-sql-edge/tutorial-sync-data-factory",
       "redirect_document_id": true
     },
-	  {
-	    "source_path":"articles/azure-monitor/app/alerts.md",
-		  "redirect_url":"/azure/azure-monitor/platform/alerts-log",
-		  "redirect_document_id": false 		
-	  }
+    {
+    "source_path":"articles/azure-monitor/app/alerts.md",
+    "redirect_url":"/azure/azure-monitor/platform/alerts-log",
+    "redirect_document_id": false 		
+    }
   ]
 }