message: Indicate operator documentation is auto generated
diff: @@ -18,6 +18,7 @@ def display_number(v):
  def main(args):
  args.output.write('## Operator Schemas\n')
  + args.output.write('*This file is automatically generated from the [def files](/onnx/defs)*')
  for op_type, schema in sorted(defs.get_all_schemas().items()):
  # If support level is experimental, then don't generate documentation.
  