Update kptimes.py

kptimes.py

@@ -77,7 +77,7 @@ class KPTimes(datasets.GeneratorBasedBuilder):
                     "other_metadata": datasets.features.Sequence(
                         {
                             "id": datasets.Value("string"),
-                            "categories": datasets.features.Sequence(datasets.Value("string")),
+                            "categories": [datasets.Value("string")],
                             "date": datasets.Value("string"),
                             "title": datasets.Value("string"),
                             "abstract": datasets.Value("string"),