Refine the multibuffer hint design (#25167)

Just a little touch-up here.

![Screenshot 2025-02-19 at 12 45
06 PM](https://github.com/user-attachments/assets/bab2ab5d-2c4c-4a78-812c-888b216f993e)

Release Notes:

- N/A
2d1a028de5Danilo Leal committed on 2/19/2025, 4:55:11 PM· committed by GitHubparentc34b14a
1 file changedLine totals unavailable