[BUGFIX] Misaligned radio buttons

In the TYPO3 CMS BE, radio buttons are not well aligned
with their labels. Fix it with a top margin definition.

See bug tracker for screenshots.

Resolves: #61992
Releases: 6.2
Change-Id: Iab285ead7c3fee7cdf6c1f00366c883f06c5f3dd
Reviewed-on: http://review.typo3.org/33096
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>