slapos_jio_ui_test: Fixup Typo

See merge request !507
4 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

02:00:44

passed SlapOS.Eggs.UnitTest-Master.Python2

00:12:59

passed SlapOS.Eggs.UnitTest-Master.Python3

00:13:40

passed SlapOS.Eggs.UnitTest-Master.Python3

00:17:05