Merge pull request #13 from ReactiveBayes/fix_error_message

Change error message for partition_point

src/natural_manifolds/negative_binomial.jl

@@ -14,6 +14,6 @@ end
 Converts the `point` to a compatible representation for the natural manifold of type `NegativeBinomial`.
 """
 function partition_point(::Type{NegativeBinomial}, ::Tuple{}, p, conditioner=nothing)
-    @assert conditioner >= 0 "Conditioner should be negative"
+    @assert conditioner >= 0 "Conditioner should be non-negative"
     return p
 end