docs: update to dos

Author: Indyandie

README.md

@@ -39,7 +39,7 @@ All commands are run from the root of the project, from a terminal:
 - [ ] Create Expressive Code Theme
 - [ ] Add [**RSS feed**](https://docs.astro.build/en/guides/rss/)
   - [x] docs collection
-  - [ ] add stylesheet [Pretty feed](https://github.com/genmon/aboutfeeds/blob/main/tools/pretty-feed-v3.xsl)
+  - [x] add stylesheet [Pretty feed](https://github.com/genmon/aboutfeeds/blob/main/tools/pretty-feed-v3.xsl)
   - [ ] blog collection
   - [ ] announcements collection
 - [ ] Create customizable components