DefaultThreadService: fix comment

Author: ctrueden

src/main/java/org/scijava/thread/DefaultThreadService.java

@@ -192,8 +192,8 @@ public Thread newThread(final Runnable r) {
 		// NB: Use daemon threads for the thread pool, so that idling threads do
 		// not prevent the JVM shutdown sequence from starting. The application
 		// context, and therefore the thread service, will try to dispose itself
-		// upon JVM shutdown, which will invoke executor.shutdown(), so there
-		// will be a chance for these threads to complete any pending work.
+		// upon JVM shutdown, which will invoke executor.awaitTermination(), so
+		// there will be a chance for these threads to complete any pending work.
 		thread.setDaemon(true);
 		return thread;
 	}