message: Fix url to main
diff: }
  ],
  "license": "BSD-3-Clause",
  - "main": "build/embed",
  + "main": "build/embed.js",
  "unpkg": "build/vega-embed.min.js",
  "jsdelivr": "build/vega-embed.min.js",
  "types": "build/embed.d.ts",
  