Docs/after function mdx fix (#81174)
The current formatting caused the mdx parser to do `details > p >
summary` - which caused a hydration error for invalid HTML, but also
just rendered `> Details`
<img width="501" alt="Screenshot 2025-07-02 at 10 38 51"
src="https://github.com/user-attachments/assets/61819edc-75bb-4824-a000-71a4dc880905"
/>
After:
<img width="481" alt="Screenshot 2025-07-02 at 10 47 23"
src="https://github.com/user-attachments/assets/d42c2087-ce78-4944-a580-e4630cfa864d"
/>
