Changed code documentaion to make it more clear on the allowed node/weights.

src/Numerics/Integrate.cs

@@ -70,7 +70,7 @@ namespace MathNet.Numerics
         /// <param name="invervalEndA">Where the interval ends for the first (inside) integral, exclusive and finite.</param>
         /// <param name="invervalBeginB">Where the interval starts for the second (outside) integral, exclusive and finite.</param>
         /// /// <param name="invervalEndB">Where the interval ends for the second (outside) integral, exclusive and finite.</param>
-        /// <param name="order">Defines an Nth order Gauss-Legendre rule. The order also defines the number of abscissas and weights for the rule. Precomputed Gauss-Legendre abscissas/weights for orders 2,. . ., 20, 32, 64, 96, 100, 128, 256, 512, 1024 are used, otherwise they're calulcated on the fly.</param>
+        /// <param name="order">Defines an Nth order Gauss-Legendre rule. The order also defines the number of abscissas and weights for the rule. Precomputed Gauss-Legendre abscissas/weights for orders 2-20, 32, 64, 96, 100, 128, 256, 512, 1024 are used, otherwise they're calulcated on the fly.</param>
         /// <returns>Approximation of the finite integral in the given interval.</returns>
         public static double OnRectangle(Func<double, double, double> f, double invervalBeginA, double invervalEndA, double invervalBeginB, double invervalEndB, int order)
         {