i18n(de): update astro-pages.mdx

[trueberryless]

Description

This PR updates the German translation of basics/astro-pages.mdx with the changes from #11137 and #12131. It also replaces all z. B. that did not use the non-breaking unicode space to use it correctly.

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Tracked Files

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de/basics/astro-pages.mdx	Localization changed, will be marked as complete.

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[randomguy-2650]

LGTM 🚀

[randomguy-2650]

Just fixed some likely old leftovers of the old i18n guide’s glossary.

[trueberryless]

@louisescher @randomguy-2650 Ready for a second round of reviews? I think we already look pretty solid here.

[yanthomasdev]

LGTM! Thanks!