update sharegpt conversations when chatml chat template is set (#1075) [skip ci]

* update sharegpt conversations when chatml chat template is set

* add info log when updating sharegpt/chatml conversation

src/axolotl/cli/__init__.py

@@ -25,7 +25,11 @@ from transformers import GenerationConfig, TextIteratorStreamer, TextStreamer
 from axolotl.common.cli import TrainerCliArgs, load_model_and_tokenizer
 from axolotl.logging_config import configure_logging
 from axolotl.train import TrainDatasetMeta
-from axolotl.utils.config import normalize_config, validate_config
+from axolotl.utils.config import (
+    normalize_cfg_datasets,
+    normalize_config,
+    validate_config,
+)
 from axolotl.utils.data import prepare_dataset
 from axolotl.utils.dict import DictDefault
 from axolotl.utils.distributed import is_main_process
@@ -289,6 +293,8 @@ def load_cfg(config: Path = Path("examples/"), **kwargs):
 
     normalize_config(cfg)
 
+    normalize_cfg_datasets(cfg)
+
     setup_wandb_env_vars(cfg)
 
     setup_mlflow_env_vars(cfg)