Update menu.yml for cobbler

Signed-off-by: Shubhangi-dell <shubhangi_srivastava@dell.com>

control_plane/roles/provision_cobbler/files/menu.yml

@@ -1,8 +1,7 @@
 DEFAULT menu
 PROMPT 0
-MENU TITLE Cobbler | https://cobbler.github.io
-TIMEOUT 2
+MENU TITLE Cobbler OS provisioning | https://cobbler.github.io
+TIMEOUT 3
 TOTALTIMEOUT 5
 $pxe_menu_items
-
-MENU end
+MENU end