rename files

Former-commit-id: e1a8431770fc36c0c9ee7fed4abbc3d7fdcc5efd

src/llamafactory/data/loader.py

@@ -10,10 +10,10 @@ from ..extras.constants import FILEEXT2TYPE
 from ..extras.logging import get_logger
 from ..extras.misc import has_tokenized_data
 from .aligner import align_dataset
+from .data_utils import merge_dataset
 from .parser import get_dataset_list
 from .preprocess import get_preprocess_and_print_func
 from .template import get_template_and_fix_tokenizer
-from .utils import merge_dataset
 
 
 if TYPE_CHECKING: