* docs: update type and description of IncomingMessage.headers
Fixes#22521
Updates the docs for IncomingMessage.headers to match the changes made in #17517
* Update docs/api/incoming-message.md
Co-Authored-By: Mark Lee <malept@users.noreply.github.com>
Co-authored-by: Cheng Zhao <zcbenz@electronjs.org>
Co-authored-by: Mark Lee <malept@users.noreply.github.com>
* docs: remove implicit 'any' and 'Object' types from the docs
* docs: more docs improvements, remove all remaining empty interfaces
* chore: update tests for better types
