message: Fix wrong condition and add --user in update_doc.sh
diff: @@ -8,14 +8,15 @@ if [ -z $python_exist ]; then
  exit 1
  fi
  -if [ -f "onnx/defs/gen_doc.py" ]; then
  +if [ ! -f "onnx/defs/gen_doc.py" ]; then
  echo "Please run this script in the ONNX root folder."
  + exit 1
  fi
  set -e
  echo -e "===> recompile onnx"
  -python setup.py develop
  +python setup.py develop --user
  echo -e "\n===> regenerate test data from node test"
  python onnx/backend/test/cmd_tools.py generate-data
  