[TASK] Remove space in Page module notification

The page module's notification on sysfolders to switch to list view
got an extra line which can be removed.

Resolves: #57449
Releases: 6.2
Change-Id: I3c646b1f4a258924ca46652eae7c3f60391f52ac
Reviewed-on: https://review.typo3.org/28968
Reviewed-by: Felix Kopp
Tested-by: Felix Kopp
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer