fix test typo

Author: ChrisRackauckas

test/sdesystem.jl

@@ -464,8 +464,8 @@ fdif!(du, u0, p, t)
     ]
     noise_eqs = [y - x
                  x - y]
-    sys1 = SDESystem(eqs_short, noiseeqs, t, [x, y, z], [σ, ρ, β], name = :sys1)
-    sys2 = SDESystem(eqs_short, noiseeqs, t, [x, y, z], [σ, ρ, β], name = :sys1)
+    sys1 = SDESystem(eqs_short, noise_eqs, t, [x, y, z], [σ, ρ, β], name = :sys1)
+    sys2 = SDESystem(eqs_short, noise_eqs, t, [x, y, z], [σ, ρ, β], name = :sys1)
     @test_throws ArgumentError SDESystem([sys2.y ~ sys1.z], [sys2.y], t, [], [],
         systems = [sys1, sys2], name = :foo)
 end