i18n(de): Update “Why Astro?” with “better” German typography [i18nIgnore]

[randomguy-2650]

Description (required)

• Replaced some literal German translations with just the anglicised variants, as said in the updated i18n guide.
• Improved em‐dashes—from -- (spaced out double hyphen‐minuses) to – (spaced out en‐dash, yes en‐dash is intentional due to typographic rules).
• Replaced “50%” (and other percentages) and “$350,000” with “50 %” and “350 000 $” to follow SI (as German is slowly getting rid of local abbreviations).
• Fixed ellipsis spacing

Related issues & labels (optional)

• Suggested label: i18n, hacktoberfest-accepted

Hacktoberfest 🎃

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[astrobot-houston]

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Lunaria automatically ignores changes on specific PRs by adding a ignored keyword in its title. Found: typo.

You can change this by either removing the keyword above from the PR's title, or modifying the ignoreKeywords property in your Lunaria configuration file.

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The notes below indicate what would happen if the pull request is merged when triggering status changes. Since a ignored keyword was found in the PR's title, the status changes indicated below won't be applied.

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de/concepts/why-astro.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.

[trueberryless]

Wollen wir nicht überall jetzt   statt dem unsichtbaren Unicode Zeichen verwenden? 🤔
Oder erlauben wir beides?

[trueberryless]

Changes schauen super aus, nur hätte ich eher   statt dem Unicode Zeichen verwendet. Aber wenn das @louisescher bestätigt, dann können wir gerne mergen 🙌

[trueberryless]

Please also the friendly reminder here: Hacktoberfest contribution 🥳

[randomguy-2650]

Lunaria flagged the word “typography” as “typo”, meaning typo fix so it would be ignored. I later added i18nIgnore to reinforce the logic, but this is not very good…