[BUGFIX] Use correct `resname` attribute in xlf file of EXT:dashboard

The patch for #103615 added `resname` attributes to EXT:dashboard
locallang files. An attribute was used twice, this is hereby corrected.

Resolves: #103620
Related: #103615
Releases: main, 12.4
Change-Id: I4d813f29db0d64f486c1d5593bc8c2b955a8eafb
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83761


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