check_haproxy_health update doc page

docs/20_Checks/check_haproxy_health.md

@@ -2,18 +2,8 @@
 
 ## Introduction
 
-**check_haproxy_health** checks if kernel logs inconsistency messages in the journallog.
-It requires sudo permission on /bin/journalctl
-
-If it would find error messages it switches to critical and shows the found journallog entries.
-
-## Requirements
-
-* sudo permission on /bin/journalctl to scan for the information
-
-```txt
-icingaclient ALL=(ALL) NOPASSWD: /bin/journalctl
-```
+**check_haproxy_health** checks health url of haproxy service.
+The url of it will be detected from /etc/haproxy/haproxy.cfg.
 
 ## Syntax