general punc model conversion onnx, fix bug

九耳

2023-03-29 3964f678a77c5fa8fb548ed7511a23c35539354d

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7