I’m glad to share my plugin Easy Typing (it’ not in the obsidian community plugin list yet)
本插件可以在笔记编辑过程中自动格式化书写，比如自动在中英文之间添加空格，英文首字母大写，让中文用户的 Obsidian 书写体验起飞~
This plugin designed for better typing experience. Autoformat your note as typing (Auto captalize and autospace).
而且你可以在插件的设置面板自由地设置你想要的格式化功能
And you can set the formatting rules freely in the plugin Settings panel.
More detial is in https://github.com/Yaozhuwa/easy-typing-obsidian
Have fun!