fix: markdown serialization of hyperlink with code

[ceberam]

• This PR enforces the use of single backticks in the markdown serialization of hyperlinks with text as code. The current implementation was using code blocks, while this is not allowed in markdown.
• The revision 8e9ef03 has been tested with Docling version 2.63.0 and all tests pass.
• In addition, some tests have been reorganized to favor the reuse of fixtures across modules
• Function type annotation have been added in those functions that already held annotations in the function body. As a result, Mypy checks revealed some flaws that have been fixed.

It will #resolve# docling-project/docling#2647 as soon as the PR is merged and a new release is completed.

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Related Documentation

Checked 4 published document(s) in 1 knowledge base(s). No updates required.

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[dolfim-ibm]

lgtm