update readme (#587)

Xian Shi

2023-06-02 6caf126b015ae272ce3e639939b3e2af6ef44986

 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