docs(website): Build website in production mode

Author: danez

package.json

@@ -22,7 +22,7 @@
  "start": "webpack-dev-server --inline --content-base examples/",
  "website": "run-s website:clean website:build website:redirect",
  "website:clean": "rimraf examples/dist",
- "website:build": "webpack",
+ "website:build": "cross-env NODE_ENV=production webpack",
  "website:redirect": "cp -R examples/src/example examples/dist"
  },
  "repository": {