fix: docs warnings

[pedroafabri]

This PR addresses the warnings that were occurring during the documentation generation process.

Fixed Issues:

• Escaped characters that were generating warnings;
• Resolved most warnings related to broken links;
• For links that could not be fixed internally, I added references to the docs.rs website to provide some context;
• Removed links to private functions/constants and explicitly stated their private nature;

Known Issue:

While generating the documentation, two warnings about output filename collision may still appear. This is a KNOWN ISSUE with Cargo and unrelated to the changes introduced in this PR.

Let me know if further adjustments are needed!

[jonathanpwang]

LGTM tyvm!