Fix the rendering of warning text in our docs (#17958)

cc: @danilo-leal 

Before:

<img width="753" alt="Screenshot 2024-09-17 at 10 53 13 AM"
src="https://github.com/user-attachments/assets/43a2ef89-4a90-46d4-9e90-350fdd1b46bb">

After:

<img width="759" alt="Screenshot 2024-09-17 at 10 53 35 AM"
src="https://github.com/user-attachments/assets/49f2a250-d339-4f61-afda-3ed87181b018">

Light mode:

<img width="757" alt="Screenshot 2024-09-17 at 10 54 17 AM"
src="https://github.com/user-attachments/assets/4d425e9b-3f97-44c4-ba86-d84dc7349060">

Release Notes:

- N/A