[BUGFIX] Fix typos in DefaultConfiguration

Fix some typos found in the DefaultConfiguration.php

Change-Id: I8d05cd3555849ff082630bd94e25a51d00f23317
Resolves: #70204
Releases: master
Reviewed-on: http://review.typo3.org/43649


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>