Update sabhya.json with correct email and proxied field

- Updated email from placeholder (sabhya@example.com) to actual email (sabhya.aiss@gmail.com)
- Added required 'proxied' field set to false

This resolves Copilot's review comments on PR #1044

domains/sabhya.json

@@ -1,9 +1,10 @@
 {
   "owner": {
     "username": "SabhyaAggarwal",
-    "email": "sabhya@example.com"
+    "email": "sabhya.aiss@gmail.com"
   },
   "record": {
     "CNAME": "sabhya.me"
-  }
+  },
+  "proxied": false
 }