Correct German translations for Virgin Islands territories

[Copilot]

German translations for British Virgin Islands and US Virgin Islands used descriptive adjectives ("Britische/Amerikanische Jungferninseln") instead of the standard parenthetical format used by other languages.

Changes

• British Virgin Islands: "Britische Jungferninseln" → "Jungferninseln (UK)"
• US Virgin Islands: "Amerikanische Jungferninseln" → "Jungferninseln (USA)"

This aligns with the pattern used in Norwegian ("Jomfruøyene (Britisk)" / "Jomfruøyene (USA)") and Russian ("Виргинские Острова (Великобритания)" / "Виргинские Острова (США)"), where the governing territory is specified in parentheses rather than as an adjective.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>German Country Translations</issue_title>
<issue_description>Good Morgning

I've found some issues in the German Countryname translations of the following Countries:

English Name	correct German Name
Britisch Virgin Isles	Jungferninseln (UK)
US Virgin isles	Jungferninseln (USA)
</issue_description>

<agent_instructions>Check whether the information in the pull request is correct.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes German Country Translations #62

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