Render a collapsible on your Markdown file

collapsible_on_doc.html

<!-- add `open` attribute if you want your collapsible to be opened by default, omit if not -->
<details open><summary>My collapsible</summary>
  <p>
   
  <!-- It is possible to render markdown within HTML tag, but beware there should be spaces around it! -->
  ```json
  your code here
  ```

  </p>
</details>