website: Swap Maryam and Christopher's talk at the workshop

Maryam Babaie's talk is to be swapped with Chrisopher Batten's talk at
the gem5 Users' Workshop 2022.

Change-Id: Ib7d66eeaf7994304e7f7c4365b37aa95dc60054e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/60491
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>