fixup! docs: fix link

Author: andreastt

Diff for: CONTRIBUTING.md

@@ -250,5 +250,5 @@ Issues are labelled to make them easier to categorise and find by
 ## Communication
 
 Selenium contributors frequent the `#selenium` channel on
-`[irc.freenode.org](https://webchat.freenode.net/)`. You can also join
-the `selenium-developers@` mailing list](https://groups.google.com/forum/#!forum/selenium-developers).
+[`irc.freenode.org`](https://webchat.freenode.net/). You can also join
+the [`selenium-developers@` mailing list](https://groups.google.com/forum/#!forum/selenium-developers).