Hey, any @Netlify people who can help a dummy like me?

I'm using this plugin to generate a sitemap for @TransistorFM: github.com/netlify-labs/n…

But I need it to generate URLs with a trailing slash.

(Instructions say to edit the .toml file - I have no idea how to do that. 🙈) pic.twitter.com/e9PLYxvWPT