Refactor c-title to use c-markdown-chunk

[sopa301]

What feature(s) would you like to see in RepoSense

Refactor c-title to use c-markdown-chunk to render Markdown code.

Is the feature request related to a problem?

This helps avoid code duplication and adheres to the DRY principle.

If possible, describe the solution

Once #2191 is merged, rewrite c-title with the new c-markdown-chunk component.

Additional context

Requires #2191 to be merged.