message: [cli] Update `14-svelte-node` fixture to run "dev" command
diff: "build": "rollup -c",
  "autobuild": "rollup -c -w",
  "start": "sirv public --single --port $PORT",
  - "start:dev": "sirv public --single --dev --port $PORT"
  + "dev": "sirv public --single --dev --port $PORT"
  }
  }
  