Update example using python3_version_nodots
    
    This is not defined until `python3-devel` is installed, so it has to be
    conditionally evaluated just like the previous `python3_version`
    example.
    
    ALso note that the comparison using `python3_version` does not work on
    EPEL 9 as well, and `python3_version_nodots` is required.
    
    Signed-off-by: Michel Alexandre Salim <salimma@fedoraproject.org>
    
    Changed 38 back to 39.
    
    Merges: #1292
    
    Signed-off-by: James Antill <james@fedoraproject.org>