Add "enable" to config help (#14866)

Most help sections were missing "enable", which means it
is filtered out with `mc admin config get --json`.

Add it where missing.

internal/logger/help.go

@@ -73,6 +73,13 @@ var (
 	}
 
 	HelpWebhook = config.HelpKVS{
+		config.HelpKV{
+			Key:         config.Enable,
+			Description: "set to 'on' to enable the audit logger",
+			Optional:    true,
+			Type:        "on|off",
+			Sensitive:   false,
+		},
 		config.HelpKV{
 			Key:         Endpoint,
 			Description: `HTTP(s) endpoint e.g. "http://localhost:8080/minio/logs/audit"`,
@@ -115,6 +122,13 @@ var (
 	}
 
 	HelpKafka = config.HelpKVS{
+		config.HelpKV{
+			Key:         config.Enable,
+			Description: "set to 'on' to enable kafka audit logging",
+			Optional:    true,
+			Type:        "on|off",
+			Sensitive:   false,
+		},
 		config.HelpKV{
 			Key:         KafkaBrokers,
 			Description: "comma separated list of Kafka broker addresses",