Convert to Markdown on iOS

I have about 750 text files. The AppleScript I have pulls up a dialog box that gives me the option to rename the file to any extension.

With KM I can have it select the file, run the script, append the .md to the file name then move to the next file.

I’ve been using the script by Korm in this post: forum.devontechnologies.com/view … =2&t=18930

If you have a script to immediately change the file to Markdown that would be great!