fix(nano.d.ts): add opts and callback for relax

[YC]

Overview

Adds opts and callback to nano.request type definition.

Testing recommendations

Changes to typescript definitions only, no code modified.

GitHub issue number

N/A

Related Pull Requests

N/A

Checklist

• [x] Code is written and works correctly;
• [x] Changes are covered by tests;
• [x] Documentation reflects the changes;