Update RDD_2020.py

RDD_2020.py

@@ -101,7 +101,7 @@ class RDD2020_Dataset(datasets.GeneratorBasedBuilder):
             datasets.SplitGenerator(
                 name=datasets.Split.VALIDATION,
                 gen_kwargs={
-                    "filepath":os.path.join(downloaded_files["test2"], "test2")
+                    "filepath":os.path.join(downloaded_files["test2"], "test2"),
                     "split": "test2",
                 }
             ),