Update NQ_squad_format.py

NQ_squad_format.py

@@ -117,8 +117,8 @@ class Squad(datasets.GeneratorBasedBuilder):
         key = 0
         with open(filepath, encoding="utf-8") as f:
             data = json.load(f)
-        print("example data: ", data.keys())
-        for line in data:
+        print("example data: ", data['data'][0])
+        for line in data['data']:
             yield key, {
                 "context": line['context'],
                 "question": line["question"],