[monitoring-plugins] check_radius: Change help to emphasize the ...

[RincewindsHat]

 Module: monitoring-plugins
 Branch: master
 Commit: f5acd14048c8c2c7c446d99f2bf4d85b9dc62080
 Author: RincewindsHat <12514511+RincewindsHat at users.noreply.github.com>
   Date: Tue Sep  5 00:00:09 2023 +0200
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=f5acd14

check_radius: Change help to emphasize the necessity of a config file

---

 plugins/check_radius.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/check_radius.c b/plugins/check_radius.c
index 984aa37..b1b4938 100644
--- a/plugins/check_radius.c
+++ b/plugins/check_radius.c
@@ -381,7 +381,7 @@ print_help (void)
   printf ("\n");
   printf ("%s\n", _("This plugin tests a RADIUS server to see if it is accepting connections."));
   printf ("%s\n", _("The server to test must be specified in the invocation, as well as a user"));
-  printf ("%s\n", _("name and password. A configuration file may also be present. The format of"));
+  printf ("%s\n", _("name and password. A configuration file must be present. The format of"));
   printf ("%s\n", _("the configuration file is described in the radiusclient library sources."));
 	printf ("%s\n", _("The password option presents a substantial security issue because the"));
   printf ("%s\n", _("password can possibly be determined by careful watching of the command line"));