doc improvement

apps/home/static/home/js/index.js

@@ -224,6 +224,9 @@ $(".sidebar-backdrop").on("click", () => setSidebarVisibility(false));
 $(window).on('resize', () => {
     const sidebarVisibility = getSidebarVisibility();
 
+    // If the sidebar expands to be permanently visible, remove the pin & open
+    // effects, so that it collapses again when shrinking the screen.
+    //
     // Can't pass conditional directly, causes flickering effect
     if (sidebarVisibility && $(window).width() > 992) {
         setSidebarPinned(false);