Update io.dart

lib/io.dart

@@ -13,8 +13,7 @@ extension MinioX on Minio {
     String object,
     String filePath, [
     Map<String, String>? metadata,
-    void Function(int)? onProgress,
-  ]) async {
+  ], {void Function(int)? onProgress,}) async {
     MinioInvalidBucketNameError.check(bucket);
     MinioInvalidObjectNameError.check(object);