update readme (cleanup)

Author: splitice

README.md

@@ -7,9 +7,9 @@ A parallel DNSBL checker using bash and GNU Parallel utilities
 ```
 #./rbl.sh
 Usage:
-/opt/zabbix/rbl5.sh listcheck - Verify that all DNSBLS in the list are responding within a reasonable time (online)
-/opt/zabbix/rbl5.sh details [ip1] [...] - Fetch details for all RBL entries for one or many IP addresses
-/opt/zabbix/rbl5.sh count [ip1] [...] - Fetch a total count of RBL entries for many IP addresses
+./rbl.sh listcheck - Verify that all DNSBLS in the list are responding within a reasonable time (online)
+./rbl.sh details [ip1] [...] - Fetch details for all RBL entries for one or many IP addresses
+./rbl.sh count [ip1] [...] - Fetch a total count of RBL entries for many IP addresses
 
 IP address can be either a single address or network in CIDR form
 ```