Update app.py

app.py

@@ -10,8 +10,8 @@ class OnnxModelConverter:
         self.model = None
     def download_file(self,file_path):
          if not os.path.exists(file_path):
-         with open(file_path, "w") as file:
-              file.write("This is a test ONNX model.")
+            with open(file_path, "w") as file:
+                file.write("This is a test ONNX model.")
          return gr.File(file_path, label="Download ONNX File")