DOC: update otpController.js

[AKSHITHA-CHILUKA]

What's wrong with the existing documentation

The documentation for otpController.js needs to be updated to improve clarity, completeness, and usability. The current documentation may be missing details about the file’s functionality, parameters, and expected responses.

Issues with Existing Documentation
Lack of Clarity: The documentation does not clearly describe the functionality and purpose of each function in otpController.js.
Missing Details: There are insufficient details about the input parameters, response formats, and possible error messages.

Add ScreenShots

Add Detailed Function Descriptions,Add Example Requests and Responses,Error Handling and Edge Cases,Code and Documentation Alignment

Record

• I agree to follow this project's Code of Conduct
• I'm a GSSOC'24 contributor
• I want to work on this issue