website: Add link to livestream for HPCA 23

Change-Id: I80f18cbd88a23d5c8b8b55081684aaa690a286ad
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/68397
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: Jason Lowe-Power <power.jg@gmail.com>
diff --git a/_pages/events/hpca-2023.md b/_pages/events/hpca-2023.md
index f1c269e..aff28d6 100644
--- a/_pages/events/hpca-2023.md
+++ b/_pages/events/hpca-2023.md
@@ -7,6 +7,8 @@
 
 **This event will be held in the St-Laurent 6 room of the Bonaventure hotel at 8AM**.
 
+[Link to YouTube LiveStream of event.](https://www.youtube.com/watch?v=npbMXXoKltg&ab_channel=gem5)
+
 The gem5 Tutorial will be held in the morning session and will focus on teaching those new to gem5 how to use the latest version.
 It will be "crash course" in gem5 and assume no prior knowledge of using computer architecture simulators.
 The tutorial will focus heavily on new features in gem5, such as the [gem5 standard library](/documentation/gem5-stdlib/overview), so may be suitable for those who have used gem5 before but wish to refresh their skills.