[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Signed-off-by: Ryan Clanton <55164720+ryancinsight@users.noreply.github.com>

Author: pre-commit-ci[bot]

monai/losses/dice.py

@@ -834,15 +834,15 @@ def forward(self, input: torch.Tensor, target: torch.Tensor) -> torch.Tensor:
         """
         if len(input.shape) != len(target.shape):
             raise ValueError("the number of dimensions for input and target should be the same.")
-           
+
         n_pred_ch = input.shape[1]
-        
+
         if self.to_onehot_y:
             if n_pred_ch == 1:
                 warnings.warn("single channel prediction, `to_onehot_y=True` ignored.")
             else:
                 target = one_hot(target, num_classes=n_pred_ch)
-        
+
         if not self.include_background:
             if n_pred_ch == 1:
                 warnings.warn("single channel prediction, `include_background=False` ignored.")