[BUGFIX] Fix initialization for checked attributes

Fix the phpDoc for checked attributes in CheckboxViewHelper
and RadioViewHelper

Fix the inititialization of the multiple parameter of the
CheckboxViewHelper

Resolves: #67225
Releases: master
Change-Id: I53dc8793e95f0c45077559ea14f92f268e0a834a
Reviewed-on: https://review.typo3.org/40646


Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Tomas Norre Mikkelsen <tomasnorre@gmail.com>
Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Tested-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>