Small fix

wikipedia.py

@@ -964,7 +964,7 @@ class Wikipedia(datasets.ArrowBasedBuilder):
         if self.config.name in PROCESSED_CONFIG_TO_NUM_SHARDS:
             num_shards = PROCESSED_CONFIG_TO_NUM_SHARDS[self.config.name]
             parquet_urls = [
-                os.path.join("data", self.config.name, f"train-{i:05d}-{num_shards:05d}.parquet")
+                os.path.join("data", self.config.name, f"train-{i:05d}-of-{num_shards:05d}.parquet")
                 for i in range(num_shards)
             ]
             # Use dictionary since testing mock always returns the same result.