Combine first 6 ingredients in a small bowl; stir with a wire whisk until blended. Set aside. Sprinkle pepper venly over both sides of salomn. Place salmon on a broiler rack coated with cooking spray, and place rack on a broiler pan. Broil 3 inches from heat 2 1/2 minutes on each side or until fish flakes easily. Spoon mayonnaise mixture over salmon, and serve with lemon wedges. Garnish with parsley sprigs, if desired.