Update readme_cn.md misspelling (#2088)

learningpro

2024-09-20 8c88d71f34ddf78588983538f887b8fb483996cd

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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