Fix link: ui.html -> menus.html

doc/index.docbook

@@ -776,7 +776,7 @@
 		</variablelist>
 		<para>
 		  Additionally &palapeli; has the common &kde; <guimenu>Settings</guimenu> and <guimenu>Help</guimenu>
-		  menu items, for more information read the sections about the <ulink url="help:/fundamentals/ui.html#menus-settings">Settings Menu</ulink> and <ulink url="help:/fundamentals/ui.html#menus-help">Help Menu</ulink> of the &kde; Fundamentals.
+		  menu items, for more information read the sections about the <ulink url="help:/fundamentals/menus.html#menus-settings">Settings Menu</ulink> and <ulink url="help:/fundamentals/menus.html#menus-help">Help Menu</ulink> of the &kde; Fundamentals.
 		</para>
 	</chapter>