fix start timestamp in sentence_info (#2024)

lingji-yidong

2024-08-19 f43da18b5e097515c12438c70fc7918c29e5d0c8

 examples/industrial_data_pretraining/llm_asr/demo_train_or_finetune2.sh

@@ -30,7 +30,7 @@
mkdir -p ${output_dir}
echo "log_file: ${log_file}"

deepspeed_config=${workspace}../../ds_stage1.json
deepspeed_config=${workspace}/../../ds_stage1.json

DISTRIBUTED_ARGS="
    --nnodes ${WORLD_SIZE:-1} \