Fix: markdown fix in TUTORIAL.md
Fix: markdown fix in TUTORIAL.md

Signed-off-by: Patrick Meier <3d26ea434b450d7598683803871bb9af035ebcd8@googlemail.com>

dupuy/chef-os-hardening,mikemoate/chef-os-hardening,patcon/chef-os-hardening,creativemarket/chef-os-hardening,waz128/os-hardening,patcon/chef-os-hardening,creativemarket/chef-os-hardening,hardening-io/chef-os-hardening,rollbrettler/chef-os-hardening,rollbrettler/chef-os-hardening,8x8Cloud/chef-os-hardening,8x8Cloud/chef-os-hardening,dupuy/chef-os-hardening,mikemoate/chef-os-hardening,hardening-io/chef-os-hardening