Update deprecation warning

Author: NicolasHug

torchvision/transforms/v2/_deprecated.py

@@ -40,7 +40,7 @@ class ToTensor(Transform):
     def __init__(self) -> None:
         warnings.warn(
             "The transform `ToTensor()` is deprecated and will be removed in a future release. "
-            "Instead, please use `transforms.Compose([transforms.ToImageTensor(), transforms.ConvertImageDtype()])`."
+            "Instead, please use `v2.Compose([transforms.ToImageTensor(), v2.ToDtype(torch.float32, scale=True)])`."
         )
         super().__init__()
 

torchvision/transforms/v2/functional/_deprecated.py

@@ -11,7 +11,7 @@
 def to_tensor(inpt: Any) -> torch.Tensor:
     warnings.warn(
         "The function `to_tensor(...)` is deprecated and will be removed in a future release. "
-        "Instead, please use `to_image_tensor(...)` followed by `convert_image_dtype(...)`."
+        "Instead, please use `to_image_tensor(...)` followed by `to_dtype(..., dtype=torch.float32, scale=True)`."
     )
     return _F.to_tensor(inpt)