Update SDK_advanced_guide_online_zh.md

Yabin Li

2023-08-08 f7f2e87271403f4832f5ba082e4b4536afaf8a30

 egs_modelscope/vad/speech_fsmn_vad_zh-cn-8k-common/demo_online.py

@@ -7,7 +7,7 @@
import soundfile

if __name__ == '__main__':
    output_dir = None
    output_dir = "./results"
    inference_pipeline = pipeline(
        task=Tasks.voice_activity_detection,
        model="damo/speech_fsmn_vad_zh-cn-8k-common",