fix args

README.md

@@ -479,7 +479,9 @@ python src/export_model.py \
     --adapter_name_or_path path_to_checkpoint \
     --template default \
     --finetuning_type lora \
-    --export_dir path_to_export
+    --export_dir path_to_export \
+    --export_size 2 \
+    --export_legacy_format False
 ```
 
 > [!WARNING]

README_zh.md

@@ -479,7 +479,9 @@ python src/export_model.py \
     --adapter_name_or_path path_to_checkpoint \
     --template default \
     --finetuning_type lora \
-    --export_dir path_to_export
+    --export_dir path_to_export \
+    --export_size 2 \
+    --export_legacy_format False
 ```
 
 > [!WARNING]

src/llmtuner/hparams/model_args.py

@@ -102,7 +102,7 @@ class ModelArguments:
         default=1024,
         metadata={"help": "The maximum length of the model inputs used for quantization."}
     )
-    export_lecacy_format: Optional[bool] = field(
+    export_legacy_format: Optional[bool] = field(
         default=False,
         metadata={"help": "Whether or not to save the `.bin` files instead of `.safetensors`."}
     )

src/llmtuner/train/tuner.py

@@ -50,7 +50,7 @@ def export_model(args: Optional[Dict[str, Any]] = None):
     model.save_pretrained(
         save_directory=model_args.export_dir,
         max_shard_size="{}GB".format(model_args.export_size),
-        safe_serialization=(not model_args.export_lecacy_format)
+        safe_serialization=(not model_args.export_legacy_format)
     )
 
     try: