Display cross reference in odoc on hover

[tysg]

The VSCode plugin is able to properly render verbatim/code text wrapped with [] in the popup on hover, but doesn't display anything when wrapped with !{} (cross reference syntax).

For example this:

(** Create new thread wrapped in {!Action.log} *)
val log_create : ?name:string -> ('a -> unit) -> 'a -> Thread.t

is rendered like this:

I'm unsure if this is an issue upstream because it feels like a rendering issue, although I found ocaml/ocaml-lsp#436