add domain zulnv

domains/zulnv.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "vietdung97",
+    "email": "ngovietdung0112@gmail.com"
+  },
+  "records": {
+    "CNAME": "my-portfolio-green-ten-52.vercel.app"
+  }
+}