Add literal annotation in author's email address

[rolnico]

Please check if the PR fulfills these requirements

• [ ] The commit message follows our guidelines
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?

No, but similar to https://github.com/powsybl/powsybl-core/pull/2753

What kind of change does this PR introduce?

Bug fix for javadoc generation

What is the current behavior?

Errors related to the author's email address formatting occur when generating the javadoc. Email addresses were written as @author Name Surname <email>

What is the new behavior (if this is a feature change)? No more errors related to that when generating the javadoc. Email addresses are written as @author Name Surname {@literal <email> }

[sonarcloud[bot]]

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