Add Bookmark link supports for Docs, subheadings

[kotAPI]

Links should be shareable by sections of a page, called bookmarks - when you share, for ex, Accordion component's API section

so the link would look something like https://www.rad-ui.com/docs/components/accordion#api if you were to share a specific section, super useful and important for documentation websites

For example, here's how other libs do it

• https://www.radix-ui.com/primitives/docs/components/accordion#api-reference
• https://mui.com/base-ui/react-autocomplete/#hook

Figure out a proper mechanisms to achieve this