updated wording for custom header configuration to reflect *any* container, not just div

Author: dericcrago

docs/toolbars/docs-headers.html

@@ -129,7 +129,7 @@ <h3>Default back button style</h3>
 		If you're doing this programmatically, set this option inside the mobileinit event handler.</p>
 
 			<h2>Custom header configurations</h2>
-			<p>If you need to to create a header that doesn't follow the default configuration, simply wrap your custom styled markup in a container <code>div</code> inside the header container and the plugin won't apply the automatic button logic so you can write custom styles for laying out the content in your header.</p> 
+			<p>If you need to to create a header that doesn't follow the default configuration, simply wrap your custom styled markup in any container, such as <code>div</code>. The plugin won't apply the automatic button logic to the wrapped content inside the header container so you can write custom styles for laying out the content in your header.</p> 
 
 			<p>It's also possible to create custom bars without using the header data-role at all. For example, start with any container and add the <code>ui-bar</code> class to apply standard bar padding and  add the <code>ui-bar-b</code> class to assign the bar swatch styles from your theme (the "b" can be any swatch letter).</p>