Update README.md

README.md

@@ -68,7 +68,7 @@ The model was fine-tuned using the following approach:
 
 ### Fine-tuning Configuration
 
-The model includes an advanced learning rate optimization system for fine-tuning, implemented through the `LROptimizerCallback` class:
+The model includes an advanced learning rate optimization system for fine-tuning, implemented through the custom `LROptimizerCallback` class which can be found in _lr_optimizer.py_:
 
 ```python
 from transformers import AutoTokenizer, Trainer