Update qa_squad.py

qa_squad.py

@@ -21,7 +21,7 @@ archivePrefix = {arXiv},
 }
 """
 _BASE_URL = "https://huggingface.co/datasets/lmqg/qa_squad/resolve/main/datasets"
-_URLS = {k: f'{_BASE_URL}/{k}.json' for k in
+_URLS = {k: f'{_BASE_URL}/{k}.jsonl' for k in
          [str(datasets.Split.TEST), str(datasets.Split.TRAIN), str(datasets.Split.VALIDATION)]}