Update README.md

README.md

@@ -37,7 +37,7 @@ The QUAERO French Medical corpus features **overlapping entity spans**, includin
 
 ## Evaluation
 
-Evaluation was performed on the test split comparing 2 sets, the predicted one and the ground truth one :
+Evaluation was performed on the test split by comparing the predicted entity set against the ground truth annotations using exact (type, entity) matching.
 
 | Metric    | Score  |
 | --------- | ------ |