fix lm_inference_launch.py

wucong.lyb

2023-05-22 42e1259075e6cf75c41a2c1826c6af92c353a71f

 egs/aishell2/transformer/run.sh

@@ -137,6 +137,7 @@
                --data_dir ${feats_dir}/data \
                --train_set ${train_set} \
                --valid_set ${valid_set} \
                --data_file_names "wav.scp,text" \
                --cmvn_file ${feats_dir}/data/${train_set}/cmvn/cmvn.mvn \
                --speed_perturb ${speed_perturb} \
                --dataset_type $dataset_type \