message: fix(package.json): make yarn dev work better with double quotes
diff: "node": "12"
  },
  "scripts": {
  - "dev": "concurrently 'yarn start' 'yarn start-backend'",
  + "dev": "concurrently \"yarn start\" \"yarn start-backend\"",
  "start": "yarn workspace example-app start",
  "start-backend": "yarn workspace example-backend start",
  "build": "lerna run build",
  