Fixed issue with icon alt text.
Fixed issue with icon alt text.

refs #5468

Fixed a minor issue resulting in incorrect status icon alt text being shown
in the dashboard.

eckardm/archivematica,artefactual/archivematica,michal-ruzicka/archivematica,michal-ruzicka/archivematica,artefactual/archivematica,artefactual/archivematica,michal-ruzicka/archivematica,artefactual/archivematica,michal-ruzicka/archivematica,sevein/archivematica,eckardm/archivematica,eckardm/archivematica,sevein/archivematica,sevein/archivematica,sevein/archivematica,eckardm/archivematica