Update nodemgmt-scripts.sh

nodemgmt-scripts.sh

@@ -1002,6 +1002,7 @@ GUI(){
 		set-permissions) SET-PERMISSIONS ${2};;
 		service)
 			if [ "${2}" = "-h" ]; then
+				echo -e "\nCommand used to manage a service accross all nodes\n"
 				echo -e "Usage: ${idsCL[Yellow]}[nodemgmt or nmg] service {service} {action}${idsCL[Default]} {"
 				width=35
 				printf "%-${width}s- %s\n" "    {service}" "(service name, ex. nginx)"