correct some copypasted code

www/drive/inner.html

@@ -33,7 +33,7 @@
                 <li><a tabindex="-1" data-icon="fa-file-code-o" class="newdoc own editable dropdown-item" data-type="code" data-localization="button_newcode">New code</a></li>
                 <li><a tabindex="-1" data-icon="fa-file-powerpoint-o" class="newdoc own editable dropdown-item" data-type="slide" data-localization="button_newslide">New slide</a></li>
                 <li><a tabindex="-1" data-icon="fa-calendar" class="newdoc own editable dropdown-item" data-type="poll" data-localization="button_newpoll">New poll</a></li>
-                <li><a tabindex="-1" data-icon="fa-calendar" class="newdoc own editable dropdown-item" data-type="whiteboard" data-localization="button_newwhiteboard">New whiteboard</a></li>
+                <li><a tabindex="-1" data-icon="fa-paint-brush" class="newdoc own editable dropdown-item" data-type="whiteboard" data-localization="button_newwhiteboard">New whiteboard</a></li>
             </ul>
         </div>
         <div id="defaultContextMenu" class="contextMenu dropdown clearfix">