This is now ready to be merged, however, I am not sure about one of the broken links.
I replaced https://ksp-kos.github.io/KOS_DOC/summary_topics/coordframe/raw/ with https://ksp-kos.github.io/KOS_DOC/math/geocoordinates.html. If someone could confirm if this is right or tell me what to change it to, it would be appreciated. Other than that, ready to merge!

depending on the context of https://ksp-kos.github.io/KOS_DOC/summary_topics/coordframe/raw/ it could also be intended to point at https://ksp-kos.github.io/KOS_DOC/math/ref_frame.html#origin-position

EDIT: looking at the surrounding text in your changes it definitely should be referencing the https://ksp-kos.github.io/KOS_DOC/math/ref_frame.html#origin-position not geocoordinates as everything in there has to do with vectors and one of the critical things when it comes to working with vectors is knowing the origin of the vector.

EDIT2: the velocity related suffixes might also be better served by linking to: https://ksp-kos.github.io/KOS_DOC/structures/orbits/orbitablevelocity.html as they do not directly return vectors.

Fixed, thank you!