Actually, there's an app that does that : Joplin from https://github.com/laurent22/joplin

you can publicise the markdown text that you're writing in markdown. here's an example with my joplin server and with the desktop app running on linux. I get this link : https://joplin.mehdiguiraud.info/shares/8YBjIJwoNh15uVY900xq...