Minor documentation correction

[liamh]

SatelliteDynamics.jl/src/simulation/propagators.jl

Line 15 in e51002c

- `area_srp`: Velocity-facing area affected by drag. [m^2]

Looks like this duplicated the line two lines prior, should say something like "sun-facing area affected by solar radiation pressure".

[duncaneddy]

Ah yes, good catch. I'll fix it in the next release. Thank you!

[duncaneddy]

This was fixed in this commit on the deb brach.

Closing the issue and thank you for reporting it!