[TASK] Fix class namespace in php doc comment of JsonView

This would allow everyone else to copy and paste example.

Releases: master, 9.5
Resolves: #89019
Change-Id: I64bc9d9f2db6d92bf264cff9d2172e6cc1ff36ee
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61559


Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>