Correctly update 32-bit choose_order test.

Author: chriselrod

test/gemm.jl

@@ -590,7 +590,7 @@
     elseif LoopVectorization.REGISTER_COUNT == 16
         @test LoopVectorization.choose_order(lsAtmulBt8) == ([:n, :m, :k], :m, :n, :m, 2, 4)
     elseif LoopVectorization.REGISTER_COUNT == 8
-        @test LoopVectorization.choose_order(lsAtmulBt8) == ([:n, :m, :k], :n, :m, :n, 1, 4)
+        @test LoopVectorization.choose_order(lsAtmulBt8) == ([:n, :m, :k], :m, :n, :m, 1, 4)
     end
 
     struct SizedMatrix{M,N,T} <: DenseMatrix{T}