Update README.md

README.md

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 If you find this model helpful, please *like* this model and star us on https://github.com/LianjiaTech/BELLE !
 
 # Belle-whisper-large-v2-zh
-Fine tune whisper-large-v2 to improve Chinese speech recognition, Belle-whisper-large-v2-zh has 30-70% relative improvements on Chinese ASR benchmark(AISHELL1, AISHELL2, WENETSPEECH, HKUST).
+Fine tune whisper-large-v2 to enhance Chinese speech recognition capabilities, 
+Belle-whisper-large-v2-zh demonstrates a **30-70%** relative improvement in performance on Chinese ASR benchmarks, including AISHELL1, AISHELL2, WENETSPEECH, and HKUST.
+
 
 ## Usage
 ```python