This change use the correct variable to assign view
variables in one example in WidgetImplementation.rst.

Releases: main, 12.4
Resolves: #102318
Change-Id: I601d2589ec3a44ab77d8548d507b20969d4e11b2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81688


Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>