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").

mods/cnc/maps/nod06b/nod06b.lua

@@ -169,7 +169,7 @@ WorldLoaded = function()
 end
 
 Tick = function()
-	if Nod.HasNoRequiredUnits()  then
+	if Nod.HasNoRequiredUnits() then
 		if DateTime.GameTime > 2 then
 			GDI.MarkCompletedObjective(GDIObjective)
 		end