fixup! erp5_web: fix wrong XML structure for subsections in WebSite_viewSiteMapAsXML.

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web_widget_library/WebSite_viewSiteMapAsXML.zpt

@@ -17,7 +17,8 @@
             <loc tal:content="menu_item/url" />
           </url>
           <tal:block metal:define-macro="generateTree">
-            <url tal:repeat="item menu_item/subsection">
+            <tal:block tal:repeat="item menu_item/subsection">
+              <url>
                 <loc tal:content="item/url" />
               </url>
               <tal:recurse define="menu_item item" tal:condition="nocall:item/subsection">
@@ -28,5 +29,6 @@
         </tal:block>
       </tal:block>
     </tal:block>
+  </tal:block>
 </urlset>
 </tal:block>
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