Update SDK_advanced_guide_offline_zh.md

Yabin Li

2023-08-16 b8f9a75514fed27da73b23bdbaa9452424b6e352

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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