[TASK] Rename misspelled functional test method

Resolves: #103807
Releases: main, 12.4
Change-Id: Ifc551dcd66bc88da8c57e7213ee80d960f365509
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84179


Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: Benjamin Franzke <ben@bnf.dev>
Reviewed-by: Benjamin Franzke <ben@bnf.dev>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>