update m2met2 (#543)

yhliang

2023-05-24 72b2f1a02331328aba9d4a2442ff9e36b7c7dc0a

 funasr/losses/label_smoothing_loss.py

@@ -97,7 +97,7 @@
        normalize_length=False,
        criterion=nn.NLLLoss(reduction='none'),
    ):
        """Construct an LabelSmoothingLoss object."""
        """Construct an NllLoss object."""
        super(NllLoss, self).__init__()
        self.criterion = criterion
        self.padding_idx = padding_idx