fix style

optimum/exporters/onnx/__main__.py

@@ -322,7 +322,7 @@ def main_export(
     # TODO: support onnx_config.py in the model repo
     if custom_architecture and custom_onnx_configs is None:
         raise ValueError(
-                f"Trying to export a {model.config.model_type.replace('-', '_')} model, that is a custom or unsupported architecture for the task {task}, but no custom onnx configuration was passed as `custom_onnx_configs`. Please refer to https://huggingface.co/docs/optimum/main/en/exporters/onnx/usage_guides/export_a_model#custom-export-of-transformers-models for an example on how to export custom models. For the task {task}, the Optimum ONNX exporter supports natively the architectures: {TasksManager.get_supported_model_type_for_task(task, exporter='onnx')}."
+            f"Trying to export a {model.config.model_type.replace('-', '_')} model, that is a custom or unsupported architecture for the task {task}, but no custom onnx configuration was passed as `custom_onnx_configs`. Please refer to https://huggingface.co/docs/optimum/main/en/exporters/onnx/usage_guides/export_a_model#custom-export-of-transformers-models for an example on how to export custom models. For the task {task}, the Optimum ONNX exporter supports natively the architectures: {TasksManager.get_supported_model_type_for_task(task, exporter='onnx')}."
         )
 
     if custom_architecture and original_task == "auto":