embed the previously manually edited outdated documentation

from https://github.com/OpenRA/OpenRA/wiki/Trait-Documentation

OpenRA.Mods.RA/RallyPoint.cs

@@ -9,10 +9,12 @@
 #endregion
 
 using System.Collections.Generic;
+using OpenRA.FileFormats;
 using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA
 {
+	[Desc("Used to waypoint units after production or repair is finished.")]
 	public class RallyPointInfo : ITraitInfo
 	{
 		public readonly int[] RallyPoint = { 1, 3 };