[BUGFIX] Invalid description of noPHPscriptInclude

default of ['FE']['noPHPscriptInclude'] as documented in
t3lib/stddb/DefaultConfiguration.php is not 'media/scripts/' but
one one of 'typo3/ext/', 'typo3/sysext/' or 'typo3conf/ext'

Resolves: #43730
Releases: 6.0

Change-Id: Idb5f63ffc3c555a6b096077302b8e56cd0b82983
Reviewed-on: https://review.typo3.org/17040
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn