Fix order.yml to properly reference jQuery UI nested chapters

Author: ajpiano

order.yml

@@ -93,13 +93,13 @@
     - jquery-deferreds
     - examples
 - jquery-ui:
-  - how-jquery-ui-works
   - getting-started
-  - theming
+  - how-jquery-ui-works
+  - theming:
     - themeroller
     - api
     - write-a-theme
-  - widget-factory
+  - widget-factory:
     - why-use-the-widget-factory
     - how-to-use-the-widget-factory
 - jquery-mobile: