fix start timestamp in sentence_info (#2024)

lingji-yidong

2024-08-19 f43da18b5e097515c12438c70fc7918c29e5d0c8

 runtime/python/libtorch/demo_paraformer.py

@@ -1,5 +1,5 @@
from pathlib import Path
from funasr_torch import Paraformer
from funasr_torch.paraformer_bin import Paraformer

model_dir = "iic/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch"
model = Paraformer(model_dir, batch_size=1)  # cpu