Distributions: Negative-Binomial: fix misleading inline doc
Distributions: Negative-Binomial: fix misleading inline doc

mathnet/mathnet-numerics,shaia/mathnet-numerics,shaia/mathnet-numerics,shaia/mathnet-numerics,shaia/mathnet-numerics,mathnet/mathnet-numerics,mathnet/mathnet-numerics,mathnet/mathnet-numerics,shaia/mathnet-numerics,mathnet/mathnet-numerics