Fix typo pointed out by @ikzk
Fix typo pointed out by @ikzk

Closes #1176

cortesi/qtile,zordsdavini/qtile,zordsdavini/qtile,tych0/qtile,soulchainer/qtile,qtile/qtile,cortesi/qtile,tych0/qtile,soulchainer/qtile,ramnes/qtile,flacjacket/qtile,flacjacket/qtile,frostidaho/qtile,frostidaho/qtile,qtile/qtile,ramnes/qtile