Fixes #2666: Uses correct function for displaying choices label
Fixes #2666: Uses correct function for displaying choices label

 * Changes record.length_type to record.get_length_type_display

lampwins/netbox,digitalocean/netbox,digitalocean/netbox,lampwins/netbox,lampwins/netbox,lampwins/netbox,digitalocean/netbox,digitalocean/netbox