add a link to a recording demonstrating domain verification

docs/deployment/dns.md

@@ -175,6 +175,13 @@ One can contact the G Suite admins via
 admins are also in DevOps, you might find it quicker to ask in the divisional
 Google Chat.
 
+!!! info
+
+    [A
+    recording](https://drive.google.com/file/d/1TAPkz971dVXLma4jUebcxFoikCP9dHE9/view)
+    (DevOpd only) of a meeting where a G Suite admin demonstrated how this
+    is done is available in the DevOps shared drive.
+
 ## Summary
 
 In summary: