website: Add insttest entry to gem5-resources table

Change-Id: Ib921fcf4a6051a1d41a6a49d1414577db4b7a337
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/37739
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