Update theme configuration translation guidelines

[Marc (cramytech)]

Clarified usage of snippet keys for translations in theme configuration, including file storage locations and naming conventions.

Summary

Related links

Checklist

• I reviewed affected links, code samples, and cross-references, including PageRef references where relevant.
• I added or updated redirects in .gitbook.yaml if pages were moved, renamed, or deleted.
• I updated .wordlist.txt (and sorted it) if spellcheck flags new legitimate terms.
• Any required dependent changes in downstream modules have already been merged and published.
• This pull request is ready for review.

Notes

Beyond this change, the documentation should be updated to include code examples from the snippet files.

[shopware-dev-docs-connector]

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Repository: cramytech/docs
Commit: 3da2063
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[Micha Hobert (Isengo1989)]

Thank you for the PR Marc (@cramytech) 👍

[Copilot]

Pull request overview

This PR updates the Shopware 6 theme configuration documentation to clarify that theme configuration translations should use Administration snippet keys (to support inheritance) and provides guidance on where to store those snippet files.

Changes:

• Added guidance on storing theme configuration translation snippet keys in Administration snippet JSON files.
• Documented the fallback/override behavior between base language files (e.g. de.json) and locale-specific files (e.g. de-DE.json).

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