Update backend/utils/emailService.js

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: yash-pouranik

backend/utils/emailService.js

@@ -5,7 +5,7 @@ const dotenv = require('dotenv');
 dotenv.config();
 const resend = new Resend(process.env.RESEND_API_KEY || 're_dummy_key_for_testing');
 
-async function sendOtp(email, otp, {subject = "Verify your urBackend account"}) {
+async function sendOtp(email, otp, { subject = "Verify your urBackend account" } = {}) {
     try {
         const { data, error } = await resend.emails.send({
             from: 'urBackend <urbackend@bitbros.in>',