Fix typo

README.md

@@ -72,7 +72,7 @@ Hyperparameter details can be found in table 9 of the [paper](https://arxiv.org/
 
 ## Evaluation results
 
-This model is able to achieve an average score of 81.8 on GLUE. For more details, we refer to table 3 f the original paper. 
+This model is able to achieve an average score of 81.8 on GLUE. For more details, we refer to table 3 of the original paper. 
 
 ### BibTeX entry and citation info