Update test/rulesets/LinearAlgebra/structured.jl

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: ChrisRackauckas

test/rulesets/LinearAlgebra/structured.jl

@@ -164,6 +164,6 @@
 
     @testset "Tridiagonal" begin
         res, pb = rrule(Tridiagonal, [1, 4], [2, 3, 4], [5, 3])
-        @test pb(10*res) == (NoTangent(), [10, 40], [20, 30, 40], [50, 30])
+        @test pb(10 * res) == (NoTangent(), [10, 40], [20, 30, 40], [50, 30])
     end
 end