BUG: fix export ellipses to kml function

[Gui-FernandesBR]

Pull request type

• Code changes (bugfix, features)
• Code maintenance (refactoring, formatting, tests)
• ReadMe, Docs and GitHub updates
• Other (please describe):

Checklist

• Tests for the changes have been added (if needed)
• Docs have been reviewed and added / updated
• Lint (black rocketpy/ tests/) has passed locally
• All tests (pytest tests -m slow --runslow) have passed locally
• CHANGELOG.md has been updated (if relevant)

Current behavior

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New behavior

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Breaking change

• Yes
• No

Additional information

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[codecov]

Codecov Report

Attention: Patch coverage is 82.75862% with 15 lines in your changes missing coverage. Please review.

Project coverage is 75.95%. Comparing base (13e66f6) to head (6d7a537).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
rocketpy/plots/monte_carlo_plots.py	52.63%	9 Missing ⚠️
rocketpy/simulation/monte_carlo.py	81.81%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #712      +/-   ##
===========================================
+ Coverage    75.88%   75.95%   +0.06%     
===========================================
  Files           99       99              
  Lines        11222    11237      +15     
===========================================
+ Hits          8516     8535      +19     
+ Misses        2706     2702       -4     

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