fix a wrong comment

aman/sys/aco/Node.py

@@ -198,7 +198,7 @@ class Node:
                 avgSpeedDecrease = avgSpeed * 0.80
                 decreasedSpeedFlighttime = (trackmiles / avgSpeedDecrease) * 3600.0 # given in seconds
 
-                # calculate shortcut gain and add 15 miles for final and base turn
+                # use the the distance to the IAF for optimizations
                 timeUntilIAF = flightTime - flightTimeOnStar
                 if 0.0 > timeUntilIAF.total_seconds():
                     timeUntilIAF = timedelta(seconds = 0)