Small fix for language DE

[Thinner77]

Summary

What kind of change does this PR introduce? (check at least one)

• [x] Bugfix
• [ ] Feature
• [ ] Code style update
• [ ] Refactor
• [ ] Docs
• [ ] Build-related changes
• [ ] Other, please describe:

If changing the UI of web configuration, please provide the before/after screenshot:

Does this PR introduce a breaking change? (check one)

• [ ] Yes
• [x] No

If yes, please describe the impact and migration path for existing setups:

The PR fulfills these requirements:

• [ ] When resolving a specific issue, it's referenced in the PR's body (e.g. Fixes: #xxx[,#xxx], where "xxx" is the issue number)

If adding a new feature, the PR's description includes:

• [ ] A convincing reason for adding this feature
• [ ] Related documents have been updated (docs/docs/en)
• [ ] Related tests have been updated

PLEASE DON'T FORGET TO ADD YOUR CHANGES TO CHANGELOG.MD

• [ ] Yes, CHANGELOG.md is also updated

To avoid wasting your time, it's best to open a feature request issue first and wait for approval before working on it.

Other information:

[Paulchen-Panther]

Thank you very much for your find and PR. Since our localization platform runs via POEditor, it would be nice of you to correct the German error there. Otherwise it will be there again with the next merge. Thank you very much.

POEditor -> https://poeditor.com/join/project/Y4F6vHRFjA

[Thinner77]

OK, i've changed it in POEditor. wbr