refactor: using another markdown syntax for this one

[mfranzke]

Proposed changes

Resolves #3360

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (fix on existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

[github-actions]

🔭🐙🐈 Test this branch here: https://db-ui.github.io/mono/review/3360-docs-markdown-list-structure-not-being-transformed-to-ul-html-element

[Copilot]

Pull Request Overview

This PR refactors inline markdown syntax in code comments to improve clarity in component documentation. It updates the formatting of aria attribute comments and bullet lists across multiple component models.

• Use backticks for aria attribute names in shared models.
• Convert plain text lists into proper markdown bullet lists.
• Update accordion and header component comments accordingly.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
packages/components/src/shared/model.ts	Use backticks to format aria attribute names
packages/components/src/components/notification/model.ts	Convert description list to markdown bullet list
packages/components/src/components/header/model.ts	Convert description list to markdown bullet list (contains typo)
packages/components/src/components/accordion/model.ts	Convert description list to markdown bullet list