Ordering for md-media-xl (#9772)

Unintentional nesting?

Author: enigmasama

src/components/card/card.js

@@ -46,8 +46,8 @@ angular.module('material.components.card', [
  *    - `md-media-sm` - Class for small image
  *    - `md-media-md` - Class for medium image
  *    - `md-media-lg` - Class for large image
+ *    - `md-media-xl` - Class for extra large image
  * * `<md-card-content>` - Card content
- *  - `md-media-xl` - Class for extra large image
  * * `<md-card-actions>` - Card actions
  *  - `<md-card-icon-actions>` - Icon actions
  *