[BUGFIX] Fix path to fileadmin in system report

Resolves: #84683
Releases: master
Change-Id: I08d2fceeabd9d2d6ff52d65e35c03fc4336b8141
Reviewed-on: https://review.typo3.org/56625


Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Wittkiel Gruppe <ts@wittkiel-gruppe.com>
Tested-by: Wittkiel Gruppe <ts@wittkiel-gruppe.com>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Tested-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>