Fix format error in README.

Author: WyvernZhao

README.md

@@ -5,9 +5,10 @@
 <div align="left">
 
 </div>
-# News
-- 2023/12/21 Publish libmidi on Gitee!
-- 2022/9/22  Update libmidi version to 2.15.3, we support very large midi file playing such as millions voices midi files
+
+# News 
+- 2023/12/21 Publish libmidi on Gitee! 
+- 2022/9/22  Update libmidi version to 2.15.3, we support very large midi file playing such as millions voices midi files 
 
  [millions voices midi demo](midi_demo/test/red_zone_insane_black_remix.mid)