Update messages_de_DE.properties

[mjbohn]

Description of Changes

Some minor updates to german translation.

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Checklist

General

• I have read the Contribution Guidelines
• I have read the Stirling-PDF Developer Guide (if applicable)
• I have read the How to add new languages to Stirling-PDF (if applicable)
• I have performed a self-review of my own code
• My changes generate no new warnings

Documentation

• I have updated relevant docs on Stirling-PDF's doc repo (if functionality has heavily changed)
• I have read the section Add New Translation Tags (for new translation tags only)

UI Changes (if applicable)

• Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR)

Testing (if applicable)

• I have tested my changes locally. Refer to the Testing Guide for more details.

[github-actions]

🚀 Translation Verification Summary

🔄 Reference Branch: main-branch-messages_en_GB.properties

📃 File Check: messages_de_DE.properties

1. Test Status: ✅ Passed
2. Test Status: ✅ Passed
3. Test Status: ✅ Passed

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✅ Overall Check Status: Success

Thanks @mjbohn for your help in keeping the translations up to date.

[Ludy87]

Ich würde Beliebtheit verwenden

[mjbohn]

Ja, passt definitiv besser :-)
Soll ich das mit einem weiteren PR anpassen?

[Ludy87]

Kannst du doch hier direkt ändern 😉

[mjbohn]

OK. Bei der Gelegenheit auch noch einen Typo von mir gefixt.