An incorrect formula in the documentation

[nakorae]

there may be an error in the formula for the ZoH. https://github.com/JuliaControl/ControlSystems.jl/blob/2cb622d6d97db3e243adc7f7907b7db5d3b514e6/docs/src/examples/zoh.md?plain=1#L13-L19 I believe the correct formula is Z(s) = \dfrac{1 - e^{-T_s s}}{T_s s} . Furthermore, I believe this is also incorrect. https://github.com/JuliaControl/ControlSystems.jl/blob/2cb622d6d97db3e243adc7f7907b7db5d3b514e6/docs/src/examples/zoh.md?plain=1#L23

I'm sorry for my unclear English...

[baggepinnen]

See #933