update paraformer-large model README.md

lzr265946

2023-01-31 5336d72a3176d44f74edb5359d33c8f22b4d3c68

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