fix(#2263): remove markdown from slider card

[MSzalowski]

List of changes

• remove markdown from slider card (based on copied from pdf-ui remove markdown utility)

Checklist

• related issue
• [x] My changes generate no new warnings
• [x] My code follows the style guidelines of this project
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the changelog
• [x] I have added tests that prove my fix is effective or that my feature works

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[github-actions[bot]]

:white_check_mark: All checks succeeded

[github-actions[bot]]

:white_check_mark: All checks succeeded

[github-actions[bot]]

:white_check_mark: All checks succeeded

[github-actions[bot]]

:white_check_mark: All checks succeeded

[github-actions[bot]]

:white_check_mark: All checks succeeded

[github-actions[bot]]

:white_check_mark: All checks succeeded

[github-actions[bot]]

@MSzalowski This PR is in the tag: develop-4ff3e146f5f8f8567a71f72dcdb741b3dd9821a2 , for govtool-metadata-validation service

[github-actions[bot]]

:white_check_mark: All checks succeeded

[github-actions[bot]]

@MSzalowski This PR is in the tag: develop-4ff3e146f5f8f8567a71f72dcdb741b3dd9821a2 , for govtool-backend service

[github-actions[bot]]

@MSzalowski This PR is in the tag: develop-4ff3e146f5f8f8567a71f72dcdb741b3dd9821a2 , for govtool-frontend service