Update message to ba valid for all versions

Author: lcharette

app/templates/partials/obsolete.html.twig

@@ -1,6 +1,6 @@
 {% if page.getFrontMatter().obsolete %}
     <div class="uk-alert uk-alert-danger">
         <p class="uk-alert-title"><i class="fa-solid fa-clock uk-icon"></i>Obsolete page</p>
-        <p>This page requires updating for UserFrosting 6. You can help by <a href="{{ page.github }}">contributing on GitHub</a>.</p>
+        <p>This page requires updating. You can help by <a href="{{ page.github }}">contributing on GitHub</a>.</p>
     </div>
 {% endif %}