DOC: Fix docs References and Examples Build.

DOC: new comparison plot

* BUG: fix export ellipses to kml function

* BUG: fix export ellipses to kml function

* MNT: raise error if no apogee or impact data is found for plotting ellipses

* DEV: Adds #712 to changelog

* TST: increase monte carlo tests

* ENH: add structural to total mass ratio for motor and rocket

* ENH: adding structural mass ratio as an attribute of Motor

* ENH: add structural mass ratio to rocket

* ENH: capitalize words on prints

* DOC: adding structural mass ratio attribute to docstrings

* DOC: fix incorrect documentation names of attributes

* Remove erroneous comment

Co-authored-by: Gui-FernandesBR <63590233+Gui-FernandesBR@users.noreply.github.com>

* DOC: modify changelog

* ENH: properly testing division by zero when computing the structural mass ratio

* MNT: make black

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Co-authored-by: Gui-FernandesBR <63590233+Gui-FernandesBR@users.noreply.github.com>

DOC: Updates README

* DEV: updates workflows to include python 3.13

* DOC: edit doctest due to floating point precision.

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Co-authored-by: Pedro Bressan <phmbressan@usp.br>

DEV: Updates master for v1.6.2

REL: rocketpy v1.6.2