message: Uptate CONTRIBUTING.md
  add nvm latest tag --lts
diff: @@ -512,8 +512,8 @@ First, be sure you are using recent versions of Node.js and npm. We recommend us
  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.0/install.sh | bash
  cd superset-frontend
  -nvm install
  -nvm use
  +nvm install --lts
  +nvm use --lts
  ```
  Or if you use the default macOS starting with Catalina shell `zsh`, try:
  