first commit

media/com_admin/js/admin-help.js

@@ -0,0 +1,10 @@
+/**
+  * @copyright   (C) 2021 Open Source Matters, Inc. <https://www.joomla.org>
+  * @license     GNU General Public License version 2 or later; see LICENSE.txt
+  */
+const helpIndex = document.getElementById('help-index');
+if (helpIndex) {
+  [].slice.call(helpIndex.querySelectorAll('a')).map(element => element.addEventListener('click', () => {
+    window.scroll(0, 0);
+  }));
+}

media/com_admin/js/admin-help.min.js

@@ -0,0 +1 @@
+const helpIndex=document.getElementById("help-index");helpIndex&&[].slice.call(helpIndex.querySelectorAll("a")).map((e=>e.addEventListener("click",(()=>{window.scroll(0,0)}))));