missing a " for closing title arg

git-svn-id: http://piwigo.org/svn/trunk@9706 68402e56-0260-453c-a942-63ccdbb3a9ee

themes/default/template/popuphelp.tpl

@@ -1,7 +1,7 @@
 <div id="content" class="content">
 	<div class="titrePage">
 	<ul class="categoryActions">
-		<li><a href="#" onclick="window.close();" title="{'Close this window'|@translate} class="pwg-state-default pwg-button">
+		<li><a href="#" onclick="window.close();" title="{'Close this window'|@translate}" class="pwg-state-default pwg-button">
 			<span class="pwg-icon pwg-icon-close">&nbsp;</span><span class="pwg-button-text">exit</span>
 		</a></li>
 	</ul>