Update advanced.md - match style of extract-css.md

vuejs · yyx990803 · Nov 2, 2016 · Oct 27, 2016 · Oct 27, 2016 · 986ecfd5308d84cfdfdd3b9d4872a264676cfc15
commit 986ecfd5308d84cfdfdd3b9d4872a264676cfc15
diff --git a/docs/en/configurations/advanced.md b/docs/en/configurations/advanced.md
@@ -2,7 +2,7 @@

 Sometimes you may want to apply a custom loader string to a language instead of letting `vue-loader` infer it. Or you may simply want to overwrite the built-in loader configuration for the default languages. To do that, add a `vue` block in your Webpack config file, and specify the `loaders` option.

-Webpack 1.x Example:
+### Webpack 1.x

 ``` js
 // webpack.config.js
@@ -30,7 +30,7 @@ module.exports = {
 }
 ```

-Webpack 2.x (^2.1.0-beta.25):
+### Webpack 2.x (^2.1.0-beta.25)

 ``` js
 module.exports = {