Update runtests.jl

Author: dlfivefifty

test/runtests.jl

@@ -470,7 +470,7 @@ end
     @test_throws BoundsError K[Inclusion(0..0.5), Inclusion(0..0.5)][1,1]
 end
 
-@testset "A \ ( c .* B) == c .* (A\B) #101" begin
+@testset "A \\ ( c .* B) == c .* (A\\B) #101" begin
     L = LinearSpline(0:5)
     @test L \ (2L) == 2(L\L)
 end