fix loss normalization for ddp training

haoneng.lhn

2023-12-07 4152cf4615e234b9892703a8e088cdd51937fc13

 funasr/main_funcs/pack_funcs.py

@@ -191,12 +191,12 @@

    Examples:
        tarfile:
           model.pth
           model.pb
           some1.file
           some2.file

        >>> unpack("tarfile", "out")
        {'asr_model_file': 'out/model.pth'}
        {'asr_model_file': 'out/model.pb'}
    """
    input_archive = Path(input_archive)
    outpath = Path(outpath)