[TASK] Improve accesibility of workspace module

Add a missing label to the workspace module and remove a not needed line
break in a translation.

Resolves: #97052
Releases: main, 11.5
Change-Id: I8a01373fde08bb249f42f9426247cbd589258731
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/73726


Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Oliver Bartsch <bo@cedev.de>