Update README.md

SemEval2019-Task5/evaluation/README.md

@@ -46,7 +46,7 @@ When submitting predictions to the task page in Codalab, one single file should
 
 The script outputs a file **scorer.txt** containing different scores, depending on the task.
 For task A it returns accuracy, precision, recall and F<sub>1</sub>-score just for the HS category.
-For task B it returns accuracy, precision, recall and F<sub>1</sub>-score for each category (HS, Target Type, Aggressiveness), along with the macro-avreaged F<sub>1</sub>-score and the Exact Match Ratio.
+For task B it returns accuracy, precision, recall and F<sub>1</sub>-score for each category (HS, Target Type, Aggressiveness), along with the macro-averaged F<sub>1</sub>-score and the Exact Match Ratio.
 
 ## Testing the script offline ##