Request COVID-Certificate has wrong text(normal)

[CV113]

Replace "Testergebnis" by "Testzertifikat"

--> https://jira-ibs.wbs.net.sap/browse/EXPOSUREAPP-11602

Checklist

Thank you for this this PR! Please consider the following:

• To the Community ❤️:
  • Please link to an issue ticket where your code change has been greenlit, otherwise it's unlikely it can be merged.
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• To the Maintainers ☕:
  • Title structure: Jira ticket name (EXPOSUREAPP-XXXX).
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  • Update Jira status: In Review.
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• To everyone 🗺️:
  • Describe your changes in detail, if you changed the UI, screenshots or GIFs would be awesome!
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  • Don't introduce unrelated code reformatting (e.g., on-save hooks in your IDE)
  • Remove this checklist before creating your pull request.

Description

Steps to reproduce

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[KathrinLuecke]

UA approved