website: Added link to square.o in gem5-resources table

Change-Id: I91560565a99e6aee27ce766f8c1fde184d5930a9
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/37741
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
1 file changed