Fix the variable name (#2328)

majic31

2024-12-24 23e7ddebccd3b05cf7ef89809bcfe565ad6dfa1f

 docs/tutorial/README_zh.md

@@ -421,6 +421,12 @@
res = model.export(quantize=False)
```

### 优化onnx
```shell
# pip3 install -U onnxslim
onnxslim model.onnx model.onnx
```

### 测试ONNX
```python
# pip3 install -U funasr-onnx