website: Fix 'th' -> 'st' type in ISCA '23

Change-Id: I3da8dcb9ef96ecc93d11108b2198bd6a57a48d0a
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/69138
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
1 file changed