Add BijectiveSimplexLink in the docs

docs/src/api.md

@@ -20,6 +20,7 @@ PoissonLikelihood
 ```@docs
 Link
 ChainLink
+BijectiveSimplexLink
 ```
 
 The rest of the links [`ExpLink`](@ref), [`LogisticLink`](@ref), etc.,

src/links.jl

@@ -36,10 +36,10 @@ Base.inv(l::Link) = Link(InverseFunctions.inverse(l.f))
 Wrapper to preprocess the inputs by adding a `0` at the end before passing it to 
 the link `link`.
 This is a necessary step to work with simplices.
-For example with the [`SoftMaxLink`](@ref), to obtain a `n`-simplex leading to
-`n+1` categories for the [`CategoricalLikelihood`](@ref),
-one needs to pass `n+1` latent GP.
-However, by wrapping the link into a `BijectiveSimplexLink`, only `n` latent are needed. 
+For example with the [`SoftMaxLink`](@ref), to obtain a `n-1`-simplex leading to
+`n` categories for the [`CategoricalLikelihood`](@ref),
+one needs to pass `n` latent GP.
+However, by wrapping the link into a `BijectiveSimplexLink`, only `n-1` latent GP are needed. 
 """
 struct BijectiveSimplexLink{L} <: AbstractLink
     link::L