docs(menuClose): improve menuClose docs

Author: adamdbradley

js/angular/directive/menuClose.js

@@ -9,7 +9,7 @@
  *
  * @usage
  * Below is an example of a link within a side menu. Tapping this link would
- * automatically close the currently opened menu
+ * automatically close the currently opened menu.
  *
  * ```html
  * <a menu-close href="#/home" class="item">Home</a>

js/angular/directive/sideMenus.js

@@ -12,11 +12,18 @@ IonicModule
  * and/or right side menu to be toggled by dragging the main content area side
  * to side.
  *
+ * To automatically close an opened menu you can add the {@link ionic.directive:menuClose}
+ * attribute directive. Including the `menu-close` attribute is usually added to
+ * links and buttons within `ion-side-menu` content, so that when the element is
+ * clicked then the opened side menu will automatically close.
+ *
  * ![Side Menu](http://ionicframework.com.s3.amazonaws.com/docs/controllers/sidemenu.gif)
  *
- * For more information on side menus, check out the documenation for
- * {@link ionic.directive:ionSideMenuContent} and
- * {@link ionic.directive:ionSideMenu}.
+ * For more information on side menus, check out:
+ *
+ * - {@link ionic.directive:ionSideMenuContent}
+ * - {@link ionic.directive:ionSideMenu}
+ * - {@link ionic.directive:menuClose}
  *
  * @usage
  * To use side menus, add an `<ion-side-menus>` parent element,