Update NQ_squad_format.py

NQ_squad_format.py

@@ -94,7 +94,7 @@ class Squad(datasets.GeneratorBasedBuilder):
         """This function returns the examples in the raw (text) form."""
         logger.info("generating examples from = %s", filepath)
         key = 0
-        with open(filepath, encoding="utf-8") as f:
+        with open(filepath, 'rb') as f:
             data = json.load(f)
         print("example data: ", data[0])
         for line in data: