docsearch (algolia): better search (more granular)

[Horryportier]

While trying to use search bar I've noticed that I'm not redirected to place I wanted but to section which took me some time to realize that.
Example.
search: nvim_create_buf
redirected: https://neovim.io/doc/user/api.html#api-command

Would be nice if i was immediately redirected to nvim_create_buf section.

[justinmk]

A quick improvement here would be to render the help-tag-right elements as <h4> (or h3/h5/etc).

see config example in #426

[justinmk]

I would start by looking at https://github.com/neovim/neovim/blob/master/src/gen/gen_help_html.lua

[alarcritty]

I would start by looking at https://github.com/neovim/neovim/blob/master/src/gen/gen_help_html.lua

Okay, thanks. I’ll definitely take a look at it and try to understand it properly.

[justinmk]

Example search: nvim_create_buf

Search should work better now #426 . But indexing/matching specific functions like nvim_create_buf still isn't implemented, since that depends on neovim/tree-sitter-vimdoc#110