Format TXT record for better readability

domains/_vercel.darkportal.json

@@ -4,6 +4,8 @@
     "email": "ivopivo04@gmail.com"
   },
   "records": {
-    "TXT": ["vc-domain-verify=darkportal.is-a.dev,20c35a8e36dc936ab04b"]
+    "TXT": [
+      "vc-domain-verify=darkportal.is-a.dev,20c35a8e36dc936ab04b"
+    ]
   }
 }