[TASK] Improve info text for backend layouts with no colPos assigned

As the editor doesn't know anything about the name "colPos" the text is
changed.

Resolves: #99014
Releases: main, 12.4
Change-Id: I758f53896b3a16f8d8b9ac94c9290ac9cebf9d21
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84527


Reviewed-by: Garvin Hicking <gh@faktor-e.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>