Update README.md

README.md

@@ -13,7 +13,6 @@ I recommend the [Feedbro browser extension](https://nodetics.com/feedbro/), whic
 Problem with feed | 📥 | 💬 | ❓
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 [knutmelvaer.no](https://www.knutmelvaer.no/) | [/rss.xml](https://www.knutmelvaer.no/rss.xml) | [30.4.2023](https://twitter.com/simevidas/status/1652752225029042177) | URLs are broken
-[muffinman.io](https://muffinman.io/) | [/atom.xml](https://muffinman.io/atom.xml) | [26.3.2023](https://codepen.io/stanko/details/mdGXQGQ) | invalid XML
 [stuffandnonsense.co.uk/blog/](https://stuffandnonsense.co.uk/blog/) | [/blog/feed](https://stuffandnonsense.co.uk/blog/feed) | [11.1.2023](https://mastodon.social/@simevidas/109669185308080021) | server error
 [aetherpoint.com/writing/](https://www.aetherpoint.com/writing/) | [/feed.xml](https://www.aetherpoint.com/feed.xml) | [4.12.2022](https://mastodon.social/@simevidas/109457465962904832) | feed is empty
 [robdodson.me](https://robdodson.me/) | [/feed.xml](https://robdodson.me/feed.xml) | [25.11.2022](https://mastodon.social/@simevidas/109402350486107411) | invalid XML