Reference the Map Scripting page from the Lua API page

OpenRA.Mods.Common/UtilityCommands/ExtractLuaDocsCommand.cs

@@ -53,6 +53,8 @@ namespace OpenRA.Mods.Common.UtilityCommands
 				"* Individual players expose a collection of properties and commands that query information or modify their state.\n" +
 				"The properties and commands available on each actor depends on the traits that the actor specifies in its rule definitions.\n");
 			Console.WriteLine();
+			Console.WriteLine("For a basic guide about map scripts see the [`Map Scripting` wiki page](https://github.com/OpenRA/OpenRA/wiki/Map-scripting).");
+			Console.WriteLine();
 
 			var tables = Game.ModData.ObjectCreator.GetTypesImplementing<ScriptGlobal>()
 				.OrderBy(t => t.Name);