fix misleading doc

Author: Red-Portal

src/multivariate/randpermgibbs.jl

@@ -9,7 +9,7 @@ This applies `unislice` coordinate-wise in a random order.
 - `unislice::Union{<:AbstractUnivariateSliceSampling,<:AbstractVector{<:AbstractUnivariateSliceSampling}}`: a single or a vector of univariate slice sampling algorithms.
 
 When `unislice` is a vector of samplers, each slice sampler is applied to the corresponding coordinate of the target posterior.
-Furthermore, the `length(unislice)` must match the dimensionality of the posterior.
+In that case, the `length(unislice)` must match the dimensionality of the posterior.
 """
 struct RandPermGibbs{
     S <: Union{