fix(auth): correct OTP verification error message and status code

[Aditya30ag]

Summary

This PR fixes the OTP verification error response in the authentication route.

Changes Made

• Corrected typo:

  • "incorrect passowrd" → "incorrect OTP"

• Replaced misleading error message:

  • Clarified that the validation failure is related to OTP verification.

• Updated non-standard HTTP status code:

  • Replaced 432 with standard 401 Unauthorized.

Updated Response

return res.status(401).json({
  error: "incorrect OTP",
  status: 401,
});

#174

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[Aditya30ag]

Hello @0rigin-c0de sir please have a look into this PR
also please add the GSSOC tag