fix link for 2022 workshop

Author: nhanvtran

_config.yml

@@ -11,7 +11,7 @@ description: >
   learning algorithms to advance the exploration of fundamental physics from the world's biggest colliders
   to the most intense particle beams to the cosmos.
 news_byline: >
-  It's official! The registration and call for abstracts for the [2022 workshop] is now open.  It will be a hybrid workshop hosted by Southern Methodist University from Oct 3 -- Oct 6, 2022.
+  It's official! The registration and call for abstracts for the [2022 workshop](https://indico.cern.ch/event/1156222/) is now open.  It will be a hybrid workshop hosted by Southern Methodist University from Oct 3 -- Oct 6, 2022.
   To see past editions, visit our [virtual 2020 workshop](https://indico.cern.ch/event/924283/) and [2019 workshop](https://indico.cern.ch/event/822126/) webpages. 
 
 collaboration: