templates/admin/xsitemap_admin_footer.tpl
<div class="center">
<a href="https://xoops.org/" title="Visit XOOPS" target="_blank"><img src="<{xoModuleIcons32 xoopsmicrobutton.gif}>" alt="XOOPS"></a>
</div>
<div class="center smallsmall italic pad5">
<{$smarty.const._AM_MODULEADMIN_ADMIN_FOOTER}>
</div>