Fix the variable name (#2328)

majic31

2024-12-24 23e7ddebccd3b05cf7ef89809bcfe565ad6dfa1f

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ID0012W0013 https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/test_audio/asr_example_zh.wav
ID0012W0014 https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/test_audio/asr_example_en.wav