Fix doxygen page links (backport #2553)

[mergify[bot]]

🦟 Bug fix

Summary

Seems like there was a behavior change in doxygen that caused the the links in the Maritime section to change from what's expected. This breaks the tool we use to generate issues for the tutorial party. Adding the "title" argument to the \page comand seems to fix it

The link before this PR:

~/ws/ionic/build/gz-sim9/doxygen/html/md2usr_2local_2google_2home_2addisuzt_2ws_2ionic_2src_2gz-sim_2tutorials_2theorybuoyancy.html#theory_buoyancy

After: ~/ws/ionic/build/gz-sim9/doxygen/html/theory_buoyancy.html

I also took the opportunity to change raw http links to \ref commands

Checklist

• [ ] Signed all commits for DCO
• [ ] Added tests
• [ ] Updated documentation (as needed)
• [ ] Updated migration guide (as needed)
• [ ] Consider updating Python bindings (if the library has them)
• [ ] codecheck passed (See contributing)
• [ ] All tests passed (See test coverage)
• [ ] While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

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This is an automatic backport of pull request #2553 done by Mergify.

[azeey]

Ah, I was wondering why the links were still broken. Didn't realize this didn't make it to gz-sim9. Thanks for the backport @iche033