Fix wget in maritime tutorials

[caguero]

🦟 Bug fix

Fixes #2329

Summary

There were some problems with the wget commands. This patch should fix it.

Checklist

• [x] 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.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 65.97%. Comparing base (2ca64d0) to head (2d27c3f).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## gz-sim8 #2330 +/- ## =========================================== + Coverage 65.95% 65.97% +0.01% =========================================== Files 327 327 Lines 31347 31347 =========================================== + Hits 20676 20681 +5 + Misses 10671 10666 -5 ```

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[caguero]

Changes work for me now. However, it seems like we are also commiting a zip file and then removing the old files? Shouldnt we download just the zip or use a git commit hash in the url?

@arjo129 , could you clarify that?

[arjo129]

Yeah mabel is right. I think I got confused by the deletion of some of the files.