Update README.md

README.md

@@ -119,7 +119,7 @@ The dataset is comprised of four data splits.
 - `train`: used for training, contains a set of questions and the provided answers to them.
 - `validation`: used for validation, contains a set of questions and the provided answers to them (derived from the original training set defined in the paper).
 - `test_unseen_answers`: used for testing, contains unseen answers to the questions present in the `train` split.
-- `test_unseen_questions`: used for testing, contains unseen questions that do not appear in `train` split.
+- `test_unseen_questions`: used for testing, contains unseen questions that do not appear in the `train` split.
 
 |   name            |train|validation|test_unseen_answers|test_unseen_questions|
 |-------------------|----:|---------:|------------------:|--------------------:|