doc: Add API contract for PATCH /requests/:id endpoint for onboarding extension request

[pankajjs]

Issue Description

The documentation should have an api contract for PATCH /requests/:id endpoint.

Expected Behavior

The api contract must contain information for PATCH /requests/:id endpoint for onboarding extension request.

Current Behavior

The api contract does not contain information for PATCH /requests/:id endpoint for onboarding extension request.

Screenshots

Reproducibility

• This issue is reproducible
• This issue is not reproducible

Steps to Reproduce

Severity/Priority

• Critical
• High
• Medium
• Low

Additional Information

Checklist

• I have read and followed the project's code of conduct.
• I have searched for similar issues before creating this one.
• I have provided all the necessary information to understand and reproduce the issue.
• I am willing to contribute to the resolution of this issue.