Add run_clm.py URL

README.md

@@ -79,6 +79,8 @@ python run_clm.py --model_name_or_path Playingyoyo/GPepT \
                   --learning_rate 1e-5
 ```
 
+The HuggingFace script run_clm.py can be found [here](https://github.com/huggingface/transformers/blob/master/examples/pytorch/language-modeling/run_clm.py)
+
 The fine-tuned model will be saved in the `./output` directory, ready to generate tailored sequences.
 
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