Indicate that it work for US addresses only

README.md

@@ -11,7 +11,7 @@ widget:
 
 # Address Standardization and Correction Model
 
-This model is [t5-base](https://huggingface.co/t5-base) fine-tuned to transform incorrect and non-standard addresses into standardized addresses.
+This model is [t5-base](https://huggingface.co/t5-base) fine-tuned to transform incorrect and non-standard addresses into standardized addresses. , primarily trained for US addresses.
 
 
 ## How to use the model