fixed truth potion description

[stm2]

Beschreibung für funktionslosen Trank der Wahrheit

[Copilot]

Pull Request Overview

This PR updates the description of a truth potion item to reflect that it has no function, replacing the previous description that indicated it was a potent brew that enhanced senses and allowed seeing through illusions for one week.

• Updated truth potion description in English and German translation files
• Changed from describing functional magical effects to stating the item has no function

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
res/translations/strings.en.po	Updated English description for truthpotion from functional to non-functional
res/translations/strings.de.po	Updated German description for truthpotion from functional to non-functional

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