updating README

README.md

@@ -21,7 +21,7 @@ Nagios is a powerful open source software solution for monitoring your IT enviro
 * [Parameters](#parameters)
   * [Mandatory Parameters](#mandatory-parameters)
   * [Optional Parameters](#optional-parameters)
-* [PuppetDB]
+* [PuppetDB](#puppetdb)
 * [SELINUX](#selinux)
 * [Certbot](#certbot)
 * [Httpd vHost Files](#httpd-vhost-files)
@@ -44,8 +44,7 @@ Installation:
 
 * Nagios clients:
   * install client binaries like nagios plugins etc.
-  * install NRPE (optional)
-
+  * include NRPE via `cd_nrpe` (optional)
 
 Configuration
 * configure all aspects of Nagios on server
@@ -69,7 +68,6 @@ Configuration
 
 Service
 * manage Nagios service on server
-* manage NRPE service on clients (optional)
 
 Monitoring
 * monitor Nagios host