fix prepare model bug

Signed-off-by: yuwenzho <[email protected]>

Author: yuwenzho

examples/onnxrt/nlp/huggingface_model/text_classification/quantization/ptq_dynamic/prepare_model.py

@@ -89,6 +89,6 @@ def export_onnx_model(args, model):
 
     if args.input_model == 'Intel/bart-large-mrpc':
         import os
-        os.system('python -m transformers.onnx --model=Intel/bart-large-mrpc --feature=sequence-classification bart-large-mrpc/')
+        os.system('python -m transformers.onnx --model=Intel/bart-large-mrpc --feature=sequence-classification --export_with_transformers bart-large-mrpc/')
     else:
         export_onnx_model(args, model)