update hpc template

Author: sophiebsw

www/templates/hpc-new-user

@@ -13,8 +13,8 @@ and all the CPUs, memory, and GPUs are on corruption.
 You'll only be able to access them through Slurm.
 
 If you have any questions or issues using HPC, please let us know via
-email or on the #hpc_users channel on our IRC or Slack. You can find
-how to log into our IRC and Slack here:
-https://www.ocf.berkeley.edu/docs/contact/
+email or on the #rebuild channel on our IRC or Discord. You can find
+how to log into our IRC here: https://www.ocf.berkeley.edu/docs/contact
+or join our Discord: https://ocf.io/discord
 
 Welcome aboard!