D9900: Make it clear that the setting applies to tiled windows, too

[Nathaniel Graham]

ngraham edited the test plan for this revision.

REPOSITORY
  R31 Breeze

REVISION DETAIL
  https://phabricator.kde.org/D9900

To: ngraham, hpereiradacosta, #breeze
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol, mart