scripts/sync-latest-container: fix image name
    
    If I get this right, the `fedora-minimal` is actually using the same image as `fedora` (at least with f38).
    Using `${name}` instead of the hard-coded image name `fedora` should fix the issue. (fedora-minimal:38 will need to be republished)
    
    Signed-off-by: Francois Andrieu <darknao@fedoraproject.org>