fix pathlib import

ChessBot-Dataset.py

@@ -24,7 +24,7 @@ class ChessPGNDataset(GeneratorBasedBuilder):
         )
 
     def _split_generators(self, dl_manager: DownloadManager):
-        import pathlib as Path
+        from pathlib import Path
         # 1) discover your shards inside the repo:
         data_dir = Path(self.config.data_dir)
         train_shards = sorted(data_dir.joinpath("train").glob("*.pgn"))