[DOCS] Correct method references in deprecation tag

So that they can be properly linked in api.typo3.org and IDEs.

Releases: main, 12.4
Resolves: #104439
Change-Id: Id01abd68ec8f8238a70aa900a17fd33917ffd67e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/85309


Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Chris Müller <typo3@brotkrueml.dev>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>