Apply suggestion from @STICKnoLOGIC

Co-authored-by: John Aerial J. Azcune <65322242+STICKnoLOGIC@users.noreply.github.com>

domains/graison-p.json

@@ -7,5 +7,6 @@
         "CNAME": "graison-p.github.io",
         "MX": ["mx1.improvmx.com", "mx2.improvmx.com"],
         "TXT": ["v=spf1 include:spf.improvmx.com ~all"]
-    }
+    },
+    "proxied": true
 }