[BUGFIX] Changed listNum to split in documentation

There is a mistake in our Feature documentation.
Change listNum to split.

Resolves: #68779
Related: #67880
Releases: master
Change-Id: If5a2066d9db12100541dc43163ecae94667d5699
Reviewed-on: http://review.typo3.org/42301


Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>