wiki reporting: fix remaining hardcoded x86_64 cases
    
    We had several wiki reporting config entries which hardcoded
    "x86_64" in the environment or section. This was always lazy and
    now we're testing aarch64 in production it's clearly wrong in
    each case. This will fix reporting of several results on aarch64.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>