Add minor comment about ToTensor

Author: NicolasHug

torchvision/transforms/v2/_deprecated.py

@@ -17,6 +17,7 @@ class ToTensor(Transform):
  .. warning::
  :class:`v2.ToTensor` is deprecated and will be removed in a future release.
  Please use instead ``v2.Compose([v2.ToImage(), v2.ToDtype(torch.float32, scale=True)])``.
+ Output is equivalent up to float precision.
 
  This transform does not support torchscript.
 
@@ -41,6 +42,7 @@ def __init__(self) -> None:
  warnings.warn(
  "The transform `ToTensor()` is deprecated and will be removed in a future release. "
  "Instead, please use `v2.Compose([v2.ToImage(), v2.ToDtype(torch.float32, scale=True)])`."
+ "Output is equivalent up to float precision."
  )
  super().__init__()