Update urjit.json with description and repo

Added description and repo fields to the JSON.

domains/urjit.json

@@ -3,6 +3,9 @@
     "username": "urjitupadhya",
     "email": "gm4175urjitupadhyay@gmail.com"
   },
+  "description": "Urjit Upadhyay — Flutter & MERN Developer Portfolio",
+  "repo": "https://github.com/urjitupadhya/Urjit_Upadhyay_Portfolio_UPDATED",
+  "proxy": true,
   "records": {
     "CNAME": "cname.vercel-dns.com",
     "TXT": [