Change avg.is-a.dev from a CNAME to a URL redirect

Experimenting around. I'd like both domains to point to the same place, so I figure redirecting one to the other should work fine.

domains/avg.json

@@ -7,6 +7,6 @@
     "twitter": "avghelper"
   },
   "record": {
-    "CNAME": "averagehelper.github.io"
+    "URL": "averagehelper.github.io"
   }
 }