fix link to BeClojure

Author: christoph-neumann

content/community/user_groups.adoc

@@ -73,7 +73,7 @@ dojo); San Mateo (monthly meetup) (Inactive since 2022)
 ** Austria
 *** https://www.meetup.com/clojure-vienna/[Vienna Clojure User Group]
 ** Belgium
-*** http://www.beclojure.org[BeClojure] (Twitter: https://twitter.com/beclojure[@beclojure])
+*** https://beclojure.github.io/[BeClojure] (Twitter: https://twitter.com/beclojure[@beclojure])
 ** Bulgaria
 *** https://www.meetup.com/Lambda-Dojo-Sofia/[Lambda Dojo Sofia]
 ** Czech Republic