Options Example Codeblocks have no Syntax Highlighting

[snoweuph]

Currently all examples in options are rendered without Syntax Highlighting.

I noticed this in NVF on: https://github.com/NotAShelf/nvf/pull/1604|

you can't also just use litteralMD as a workaround in the examples

{
description = ''
  The queries scm script.

  Example:
  ```nix
  {
    query = '''
      ;; extends

      ((apply_expression
        function: (variable_expression
          name: (identifier) @_func
          (#eq? @_func "mkLuaInline"))

        argument: (indented_string_expression
          (string_fragment) @injection.content)

        (#set! injection.language "lua")
        (#set! injection.combined)))
    ''';
  }
  ```
'';
example = literalMD ''
  ```nix
  {
    query = '''
      ;; extends

      ((apply_expression
        function: (variable_expression
          name: (identifier) @_func
          (#eq? @_func "mkLuaInline"))

        argument: (indented_string_expression
          (string_fragment) @injection.content)

        (#set! injection.language "lua")
        (#set! injection.combined)))
    ''';
  }
  ```
'';
}