Docs: changed Mini size to Mini version for consistency (buttons-types.html)

Author: agcolom

docs/buttons/buttons-types.html

@@ -57,7 +57,7 @@ <h2>Styling links as buttons</h2>
         <p>Produces this disabled <strong>link-based</strong> button:</p>
         <a href="index.html" data-role="button" class="ui-disabled">Link button</a>
 
-            <h2>Mini size</h2>
+            <h2>Mini version</h2>
 
 		<p>For a more compact version that is useful in toolbars and tight spaces, add the <code>data-mini="true"</code> attribute to the button to create a <a href="../forms/forms-all-mini.html">mini version</a>. </p>