Bug, fix get_backup()
Bug, fix get_backup()

A typo in the download_path variable messed up the function, now it works.

finish06/pyunifi,hlyes/unifi-api,JulienPalard/unifi-api,kinneerc/unifi-api,oe1rfc/unifi-api,unifi-hackers/unifi-api,jwi078/pyunifi,calmh/unifi-api,arska/unifi-api,unifispot/unifi-api,finish06/unifi-api