Apply suggestion from @klamike

Author: klamike

test/nlp_program.jl

@@ -999,7 +999,7 @@ function test_reverse_bounds_upper()
     @variable(model, p in MOI.Parameter(4.5))
     @constraint(model, 6x[1] + 3x[2] + 2x[3] == -p)
     @constraint(model, x[1] + x[2] - x[3] == -1)
-    @objective(model, Min, sum(x.^2))
+    @objective(model, Min, sum(x .^ 2))
     optimize!(model)
     MOI.set(model, DiffOpt.ReverseConstraintDual(), UpperBoundRef(x[3]), 1.0)
     DiffOpt.reverse_differentiate!(model)