Update or remove docs badges in README

README.md contains two badges for docs: kdoc and documentation. Both badges provide invalid links (404) and should be either updated with correct links (probably require adding appropriate docs) or removed.

Open README.md and inspect the kdoc and documentation badges and their current targets. Verify which links return 404, then update them with valid documentation links or remove the badges if appropriate. Done means both badges no longer point to invalid links.

Written by the indexing model from the issue text.