update readme

examples/grpo/cosyvoice2/requirements.txt

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+conformer==0.3.2
+diffusers==0.29.0
+gdown==5.1.0
+gradio
+hydra-core==1.3.2
+HyperPyYAML==1.2.2
+inflect==7.3.1
+librosa==0.10.2
+lightning==2.2.4
+matplotlib==3.7.5
+modelscope==1.15.0
+networkx==3.1
+omegaconf==2.3.0
+onnx==1.16.0
+onnxruntime-gpu==1.18.0
+protobuf==4.25
+pydantic==2.7.0
+pyworld==0.3.4
+rich==13.7.1
+soundfile==0.12.1
+tensorboard==2.14.0
+wget==3.2
+WeTextProcessing==1.0.3
+s3tokenizer
+tensorrt
+sherpa_onnx
+jiwer
+zhon
+numpy==1.25.2
+pypinyin
+openai-whisper