fix failing test

Author: ablaom

src/StatisticalTraits.jl

@@ -173,7 +173,7 @@ abstract_type(::Type)   = Any
 is_wrapper(::Type)      = false     # or `true`
 supports_online(::Type) = false     # or `true`
 docstring(M::Type)      = string(M) # some `String`
-docstring(Contructor::Function) = Base.Docs.doc(Constructor) |> string
+docstring(Constructor::Function) = Base.Docs.doc(Constructor) |> string
 is_supervised(::Type)   = false     # or `true`
 human_name(M::Type)     = snakecase(name(M), delim=' ') # `name` defined below
 orientation(::Type)     = :loss  # or `:score`, `:other`

test/runtests.jl

@@ -46,7 +46,7 @@ end
 @testset "docstring" begin
     @test docstring(Foo(1,'x')) == "Foo"
     @test docstring(Fruit.RedApple(4)) == "Main.Fruit.RedApple{Int64}"
-    @test docstring(sin) = Base.Docs.doc(sin) |> string
+    @test docstring(sin) == Base.Docs.doc(sin) |> string
 end
 
 @testset "hyperparameter_ranges" begin