message: readme.md modification
diff: @@ -130,7 +130,7 @@ _[webpack.config.js](webpack.config.js)_
  npm start
  ```
  -- If you stop the server, and type _npm run build_ you can watch that the weight of the images inside _dist_ folder is the same as the _content_ folder.
  +- If you stop the server, and type `npm run build` you can watch that the weight of the images inside _dist_ folder is the same as the _content_ folder.
  ```bash
  npm run build
  