correct indentation error

albayzin.py

@@ -127,7 +127,7 @@ class Albayzin(datasets.GeneratorBasedBuilder):
             return text
 
 
-def _generate_examples(self, split, data_dir):
+    def _generate_examples(self, split, data_dir):
         """Generate examples from Albayzin archive_path."""
         # Iterating the contents of the data to extract the relevant information
         split2dir = {'train':'SUB_APRE' , 'test':'SUB_PRUE'}