Update app.py

app.py

@@ -76,7 +76,7 @@ class model_onxx:
           torch.onnx.export(
               model,  # The model to be exported
               example_input,  # Example input for the model
-              x,  # The filename for the exported ONNX model
+              x,# The filename for the exported ONNX model
               opset_version=11,  # Use an appropriate ONNX opset version
               input_names=['input'],  # Name of the input layer
               output_names=['output'],  # Name of the output layer