Fixing DNS dashboard title

Author: arlake228

psconfig/perfsonar-psconfig/templates/dns.json.j2

@@ -405,7 +405,7 @@
   },
   "timepicker": {},
   "timezone": "",
-  "title": "Andy DNS",
+  "title": "perfSONAR DNS Explorer",
   "uid": "e6cb1e2a-6ebd-495d-a402-7392fddf2506",
   "version": 10,
   "weekStart": ""