potential typo fix (#605)

Author: sunxd3

src/model.jl

@@ -1053,7 +1053,7 @@ Base.rand(model::Model) = rand(Random.default_rng(), NamedTuple, model)
 
 Return the log joint probability of variables `varinfo` for the probabilistic `model`.
 
-See [`logjoint`](@ref) and [`loglikelihood`](@ref).
+See [`logprior`](@ref) and [`loglikelihood`](@ref).
 """
 function logjoint(model::Model, varinfo::AbstractVarInfo)
     return getlogp(last(evaluate!!(model, varinfo, DefaultContext())))

src/simple_varinfo.jl

@@ -575,7 +575,7 @@ end
 
 Return the log joint probability of variables `θ` for the probabilistic `model`.
 
-See [`logjoint`](@ref) and [`loglikelihood`](@ref).
+See [`logprior`](@ref) and [`loglikelihood`](@ref).
 
 # Examples
 ```jldoctest; setup=:(using Distributions)