[BUGFIX] Fix broken HTML in FormEngine

A lot of HTML output in FormEngine is broken, because of
missing spaces. This patch add the missing spaces.

Resolves: #62937
Releases: master
Change-Id: Iec2c25f9b913da87aaa5d06e0a77dd257e58e1f9
Reviewed-on: http://review.typo3.org/34131
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Felix Kopp <felix-source@phorax.com>
Tested-by: Felix Kopp <felix-source@phorax.com>