Update sprandn in docs. Fix JuliaLang#31283 (JuliaLang#34257)

stdlib/SparseArrays/docs/src/index.md

@@ -199,7 +199,7 @@ section of the standard library reference.
 | [`Array(S)`](@ref) | [`sparse(A)`](@ref) | Interconverts between dense and sparse formats. |
 | [`sprand(m,n,d)`](@ref) | [`rand(m,n)`](@ref) | Creates a *m*-by-*n* random matrix (of density *d*) with iid non-zero elements distributed uniformly on the half-open interval ``[0, 1)``. |
 | [`sprandn(m,n,d)`](@ref) | [`randn(m,n)`](@ref) | Creates a *m*-by-*n* random matrix (of density *d*) with iid non-zero elements distributed according to the standard normal (Gaussian) distribution. |
-| [`sprandn(m,n,d,X)`](@ref) | [`randn(m,n,X)`](@ref) | Creates a *m*-by-*n* random matrix (of density *d*) with iid non-zero elements distributed according to the *X* distribution. (Requires the `Distributions` package.) |
+| [`sprandn(rng,m,n,d)`](@ref) | [`randn(rng,m,n)`](@ref) | Creates a *m*-by-*n* random matrix (of density *d*) with iid non-zero elements generated with the `rng` random number generator  |
 
 # [Sparse Arrays](@id stdlib-sparse-arrays)