Update README.md

README.md

@@ -73,7 +73,7 @@ Finally, we convert the pre-trained model into Huggingface's format:
 ```
 python3 scripts/convert_gpt2_from_uer_to_huggingface.py --input_model_path couplet_gpt_base_model.bin \
 														--output_model_path pytorch_model.bin \
-														--layers 12
+														--layers_num 12
 ```
 
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