[DOC] Add additional configuration to RealURL advanced example to avoid action and controller in URL of detail view

Change-Id: I72d1301cac8e3b30ce14e77d40e7eb2b370ebb50
Reviewed-on: https://review.typo3.org/27936
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer
(cherry picked from commit 01bfb39180a59aca8d17b9180664651f0bbc9190)
Reviewed-on: https://review.typo3.org/27986