Fix tutorial

[avanmalleghem]

🦟 Bug fix

Fixes #

Summary

• Fix links for live version
• Fix typo

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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🎈 Release

Preparation for <X.Y.Z> release.

Comparison to <x.y.z>: https://github.com/gazebosim//compare/...

Needed by <PR(s)>

Checklist

• [ ] Asked team if this is a good time for a release
• [ ] There are no changes to be ported from the previous major version
• [ ] No PRs targeted at this major version are close to getting in
• [ ] Bumped minor for new features, patch for bug fixes
• [ ] Updated changelog
• [ ] Updated migration guide (as needed)
• [ ] Link to PR updating dependency versions in appropriate repository in gazebo-release (as needed):

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:

Please upload report for BASE (gz-launch8@14f89d8). Learn more about missing BASE report.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## gz-launch8 #276 +/- ## ============================================= Coverage ? 58.49% ============================================= Files ? 4 Lines ? 424 Branches ? 0 ============================================= Hits ? 248 Misses ? 176 Partials ? 0 ```

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