LUA and trait documentation fixes

- Typo in documentation ("proximitry").
- Add spaces between sentences.
- Remove most occurrences of "  " (two spaces) unless clearly used as indendation
- Punctuation (although no fullstop after filenames like "notifications.yaml").

OpenRA.Mods.Common/Scripting/Properties/CombatProperties.cs

@@ -49,7 +49,7 @@ namespace OpenRA.Mods.Common.Scripting
 		}
 
 		[ScriptActorPropertyActivity]
-		[Desc("Patrol along a set of given waypoints.  The action is repeated by default, " +
+		[Desc("Patrol along a set of given waypoints. The action is repeated by default, " +
 			"and the actor will wait for `wait` ticks at each waypoint.")]
 		public void Patrol(CPos[] waypoints, bool loop = true, int wait = 0)
 		{