site: make doc menu more compact

Signed-off-by: Xieql <xieqianglong@huawei.com>

docs/config.toml

@@ -79,3 +79,10 @@ copyright = "The Kurator Authors"
 	url = "https://groups.google.com/g/kurator-dev"
 	icon = "fa fa-envelope"
   desc = "Kyverno mailing list"
+
+[params.ui]
+# 'sidebar_menu_compact': Set to 'true' to display the sidebar menu in a compact form. By default, the menu shows the current section fully expanded. This parameter allows control over the sidebar menu's display style.
+sidebar_menu_compact = true
+# 'ul_show': Specifies the level of automatic expansion for the sidebar menu. A value of '1' means all items in the first level of the menu will be automatically expanded. Adjust this value to control the expansion depth of the menu.
+ul_show = 1
+