There is a typing error in the "nnUNetTrainer.py"

[huangliang-666]

Hello authors ! I think there is a typing error in **the line 956 of the "nnUNetTrainer.py"** as show in uploaded picture. I think there should be as follows: isinstance(**self.dataloader_val**, (NonDetMultiThreadedAugmenter, MultiThreadedAugmenter))

I'm not sure if what I think is correct.

Thank you, looking forward to your reply.