update old wiki links

Author: puredanger

CONTRIBUTING.md

@@ -3,12 +3,10 @@ This is a [Clojure contrib] project.
 Under the Clojure contrib [guidelines], this project cannot accept
 pull requests. All patches must be submitted via [JIRA].
 
-See [Contributing] and the [FAQ] on the Clojure development [wiki] for
+See [Contributing] on the Clojure website for
 more information on how to contribute.
 
-[Clojure contrib]: http://dev.clojure.org/display/doc/Clojure+Contrib
-[Contributing]: http://dev.clojure.org/display/community/Contributing
-[FAQ]: http://dev.clojure.org/display/community/Contributing+FAQ
+[Clojure contrib]: https://clojure.org/community/contrib_libs
+[Contributing]: https://clojure.org/community/contributing
 [JIRA]: http://dev.clojure.org/jira/browse/TEMJVM
-[guidelines]: http://dev.clojure.org/display/community/Guidelines+for+Clojure+Contrib+committers
-[wiki]: http://dev.clojure.org/
+[guidelines]: https://clojure.org/community/contrib_howto