Update README.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: gildesmarais

README.md

@@ -8,7 +8,7 @@ This web application scrapes websites to build and deliver RSS 2.0 feeds.
 
 - Provides stable URLs for feeds generated by automatic sourcing.
 - [Create your custom feeds](https://html2rss.github.io/web-application/tutorials/building-feeds)!
-- Comes with plenty of [included configs](https://html2rss.github.io//web-application/how-to/use-included-configs).
+- Comes with plenty of [included configs](https://html2rss.github.io/web-application/how-to/use-included-configs).
 - Handles request caching.
 - Sets caching-related HTTP headers.