Error in documentation of Serre-Green-Naghdi?

In the documentation of the Serre-Green-Naghdi for variable bathymetry and mild-slope approximation the variable `u` and `v` is used. I assume it is supposed to be `v` all the time? https://github.com/NumericalMathematics/DispersiveShallowWater.jl/blob/299aa3d52175ab05ce7cb29798e1df5d4e1ba5f9/src/equations/serre_green_naghdi_1d.jl#L27-35 https://numericalmathematics.github.io./DispersiveShallowWater.jl/stable/ref/#DispersiveShallowWater.SerreGreenNaghdiEquations1D I can do a PR to fix it if wanted.