option: Fix marshal legacy DNS options

dns/transport/https.go

@@ -91,7 +91,7 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 	if err != nil {
 		return nil, err
 	}
-	serverAddr := options.ServerOptions.Build()
+	serverAddr := options.DNSServerAddressOptions.Build()
 	if serverAddr.Port == 0 {
 		serverAddr.Port = 443
 	}