Create domains/dinu7172.json (add .json extension and fix schema/CNAME)

domains/dinu7172.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "dinu7172",
+    "email": "dineshmourya7172@gmail.com"
+  },
+  "records": {
+    "CNAME": "dinesh-maurya.vercel.app"
+  }
+}