Fix typo in `container-debug.js`
@@ -7246,7 +7246,7 @@ version: 2.9.0
* </p>
* <p>
* Built-in functionality for buttons with event handlers is included.
- * If the optional YUI Button dependancy is included on the page, the buttons
+ * If the optional YUI Button dependency is included on the page, the buttons
* created will be instances of YAHOO.widget.Button, otherwise regular HTML buttons
* will be created.
* </p>
