fixed zero index

enwiki-yearly-cleaned.py

@@ -88,7 +88,7 @@ class Wikipedia(datasets.GeneratorBasedBuilder):
         data_urls = {}
         config = _CONFIGS[self.config.name]
         for split in ["train", "validation"]:
-            start_file = config.get("start", 0) if split == "train" else 0
+            start_file = config.get("start", 1) if split == "train" else 1
             num_files = config.get(split)
 
             data_urls[split] = []