[docs] Add note for float8 (#8685)

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docs/source/en/api/pipelines/stable_diffusion/stable_diffusion_3.md

@@ -251,6 +251,9 @@ image.save('sd3-single-file.png')
 
 ### Loading the single file checkpoint with T5
 
+> [!TIP]
+> The following example loads a checkpoint stored in a 8-bit floating point format which requires PyTorch 2.3 or later.
+
 ```python
 import torch
 from diffusers import StableDiffusion3Pipeline