Fixed an issue.

Sequence:length=3 in row 54 is wrong. Changed to 2.

Wikipedia-Horse-Dataset.py

@@ -51,7 +51,7 @@ class wikipediaHorseDataset(datasets.GeneratorBasedBuilder):
                         {
                             "name": datasets.Value("string"),
                             "span": datasets.Sequence(
-                                datasets.Value("int64"), length=3
+                                datasets.Value("int64"), length=2
                             ),
                             "type": datasets.Value("string"),
                         }