Update README.md

make code readable

README.md

@@ -1,6 +1,6 @@
 # check_sapcontrol
 bash-based script for checking process-status of SAP-components by using sapcontrol
-
+```
 Usage: check_sapcontrol.sh [-H hostname|IP] [-S SID] [-N SYS-nr] [-T systemtype] [-i tenant-id] [-s service-instance] [-h] [-v] [-V]
 Options:
  -H hostname or IP of SAP-system
@@ -12,6 +12,6 @@ Options:
  -v verbose output [0|1|2|3]
  -V Version
  -h this help
-
+```
 
  If you're using this script as plugin for Icinga2 or other Nagios-based checks, you need to set appropriate sudo-rights for the "icinga"-user and add it to the local "sapsys"-group