fixed READM markdown syntax

README.md

@@ -43,12 +43,12 @@ Options:
   --fullchain-destination=FULLCHAINDESTINATION  Full Chain Destination[default: /etc/ssl/certs/<cert-name>_fullchain.crt]
   --key-destination=KEYDESTINATION              Key Destination [default: /etc/ssl/private/<cert-name>.key]
   --ca-destination=CADESTINATION                CA Destination [default: /etc/ssl/certs/COMODO_<type>.crt]```
+```
 
 ## compatibility
 
 Debian/RedHat/Arch OS families
 
-
 ## build
 
 you can use `build.sh` from this repo