fix(ui): move widget and page documentation into headings

Verified with the coordinated workspace changes by devkit full run
2026-09-08T225814-186389-0000-3e3ed7cd (all seven phases passed).
This shared UI pass does not mark the individual module reviews complete.

webui/src/features/scheduling/SchedulingRequestsWidget.tsx

@@ -4,7 +4,6 @@ import { Link } from "react-router";
 import {
   DashboardWidgetList,
   DismissibleAlert,
-  DocumentationHelpLink,
   LoadingFrame,
   StatusBadge,
   formatDateTime,
@@ -80,11 +79,6 @@ export default function SchedulingRequestsWidget({
         }))}
       />
       <div className="dashboard-contribution-footer">
-        <DocumentationHelpLink
-          reference={{
-            topicId: "scheduling.find-and-decide-meeting-time",
-            documentationType: "user"
-          }} />
         <Link className="btn btn-secondary" to="/scheduling">
           {I18N.openScheduling}
         </Link>