Documentation generation is broken

[psafont]

See output:

$ make doc
dune build @doc
File "lib/mustache.mli", line 79, character 4 to line 80, character 65:
Warning: '{| try ignore (Mustache.of_string "{{!") with Mustache.Parse_error err ->
    Format.eprintf "%a@." Mustache.pp_template_parse_error err |}': bad markup.
Suggestion: did you mean '{!| try ignore (Mustache.of_string "{{!") with Mustache.Parse_error err ->
    Format.eprintf "%a@." Mustache.pp_template_parse_error err |}' or '[| try ignore (Mustache.of_string "{{!") with Mustache.Parse_error err ->
    Format.eprintf "%a@." Mustache.pp_template_parse_error err |]'?

The delimiters for the ocaml code here are not expected by odoc-parser, {[ and ]} should be used instead