Resizable demo: Trivial grammatical fix

Author: tjvantoll

demos/resizable/textarea.html

@@ -28,7 +28,7 @@
 <textarea id="resizable" rows="5" cols="20"></textarea>
 
 <div class="demo-description">
-<p>Resizable can be applied to a textarea. This allows the user to make the textarea bigger if ends up typing longer prose.</p>
+<p>Resizable can be applied to a textarea. This allows the user to make the textarea bigger to type longer prose.</p>
 </div>
 </body>
 </html>