Update packaging-sfc-for-npm.md (#2555)
Update packaging-sfc-for-npm.md (#2555)

Updating dependencies: both [rollup-plugin-buble](https://github.com/rollup/rollup-plugin-buble) and [rollup-plugin-commonjs](https://github.com/rollup/rollup-plugin-commonjs) have been moved to a [plugins library](https://github.com/rollup/plugins).
vuejs/vuejs.org,vuejs/vuejs.org,Jinjiang/vuejs.org,vuejs-fr/vuejs.org,Jinjiang/vuejs.org,vuejs-fr/vuejs.org