update : json parser added for data structure section.

README.md

@@ -68,7 +68,7 @@ This dataset can be used for the question-answering task, especially when you ar
 
 ## Dataset Structure
 Each row of the dataset will look like something like the below:
-```
+```json
 {
   'id': 0,
   'question': 'باشگاه هاکی ساوتهمپتون چه نام دارد؟',