Change failure message

Author: wchen-r7

modules/exploits/linux/http/centreon_sqli_exec.rb

@@ -86,7 +86,7 @@ def exploit
     if check == Exploit::CheckCode::Safe
       fail_with(Failure::NotVulnerable, "#{peer} - The SQLi cannot be exploited")
     elsif check == Exploit::CheckCode::Detected
-      fail_with(Failure::Unknown, "#{peer} - The SQLi cannot be exploited, maybe you just need to wait until someone logs in")
+      fail_with(Failure::Unknown, "#{peer} - The SQLi cannot be exploited. Centreon needs at least one successful login record to become exploitable. Perhaps try later?")
     end
 
     print_status("#{peer} - Exploiting...")