Update README.md

README.md

@@ -25,7 +25,7 @@ This project contains a collection of models designed for optimizing waste manag
 - Custom dataset for specialized categories (batteries, light bulbs, electronics, etc.)
 
 ## Dataset Preprocessing
-The datasets have been preprocessed and assembled using a custom tools available in the `dataset` directory of the repository.
+The datasets have been preprocessed and assembled using a custom tool available in the `dataset` directory of the repository.
 
 ## Training scripts