Update code-splitting-css.md

Fixed broken url and typos.

Author: yhpark

content/guides/code-splitting-css.md

@@ -11,7 +11,7 @@ webpack can help with this problem by bundling the CSS separately using [extract
 
 ## Using `css-loader`
 
-To import css into your JavaScript code like [any other module](concept/modules), you will have to use the [css-loader](https://github.com/webpack/css-loader)
+To import css into your JavaScript code like [any other module](/concepts/modules), you will have to use the [css-loader](https://github.com/webpack/css-loader).
 The webpack config with `css-loader` will look like
 
 ```javascript
@@ -55,8 +55,8 @@ loader: ExtractTextPlugin.extract('css-loader?sourceMap') //Can be used without
 new ExtractTextPlugin({ filename: 'bundle.css', disable: false, allChunks: true })
 ```
 
-With above two steps, you can generate a new bundle specifically for all the CSS modules and add them as a separate tag in the `index.html`
-For more info on how to use the api please go to [`ExtractTextPlugin` api](https://github.com/webpack/extract-text-webpack-plugin#api).
+With above two steps, you can generate a new bundle specifically for all the CSS modules and add them as a separate tag in the `index.html`.
+For more information on how to use the api, please go to [`ExtractTextPlugin` api](https://github.com/webpack/extract-text-webpack-plugin#api).
 
 The full config for splitting css with `ExtractTextPlugin` is as follows