Update websocket_protocol_zh.md

Yabin Li

2024-09-26 5b53b8fb7b7e8439da16e3288ea53759d7fa1229

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wget https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/dep_libs/ffmpeg-N-111383-g20b8688092-linux64-gpl-shared.tar.xz
tar -xvf ffmpeg-N-111383-g20b8688092-linux64-gpl-shared.tar.xz