Regenerate docs

1. It looks like the docs (API.md) hasn't been regenerated in a while, specifically after 14.0 `documentation` bump, and there have been a couple of regressions. Those are fixed by additional annotations (`@hideconstructor`, `@ignore`, etc. or argument renames)
2. There was one change earlier this year that modified API.md directly. I applied it to documentation.yml instead. (this changed the index numeration hence the large commit diff)
3. After the migration to pnpm some scripts weren't updated and still tried (and failed) to use npm. I updated package.json and CONTRIBUTING.md