feat(commands): improve discovery and normalize parameters

internal/modules/misc/misc.go

@@ -128,10 +128,18 @@ func senderMention(u *models.User) string {
 }
 
 func disclaimerCommand(name, description, defaultTarget string, allowCustomTarget bool) modules.Command {
+	parameters := ""
+	example := ""
+	if allowCustomTarget {
+		parameters = "[target...]"
+		example = "/" + name + " FBI"
+	}
 	return modules.Command{
 		Name:        name,
 		Visibility:  modules.VisibilityPublic,
 		Description: description,
+		Parameters:  parameters,
+		Example:     example,
 		Handler: func(ctx context.Context, b *bot.Bot, update *models.Update) error {
 			if update.Message == nil {
 				return nil