There are no docs for configuration for Emacs. That is something we need to add! I don't have experience using emacs, but if anyone does and wants to create an issue with some examples that would be awesome, otherwise I can find some time later to add it

I'm not sure which package you are using, but these are the docs for adding servers to the two main lsp clients:

Eglot: https://joaotavora.github.io/eglot/#Setting-Up-LSP-Servers

lsp-mode: https://emacs-lsp.github.io/lsp-mode/page/adding-new-languag...

Thank you.