fix: correct domain records and add Vercel TXT verification

domains/_vercel.rahul-raj.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "rahulrakshi3-netizen",
+    "email": "rahulrakshi3@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=rahul-raj.is-a.dev,c2a3d8f45f466065f5da"
+  }
+}

domains/rahul-raj.json

@@ -1,8 +1,9 @@
-{
+{
   "owner": {
-    "username": "rahulrakshi3-netizen"
+    "username": "rahulrakshi3-netizen",
+    "email": "rahulrakshi3@gmail.com"
   },
-  "record": {
-    "CNAME": "cname.vercel-dns.com"
+  "records": {
+    "A": ["216.198.79.1"]
   }
 }