[Interactive Tutorial] Correct wait condition in To Do List tutorial

Corrects the wait condition for the delete task step in the tutorial.

Author: runrevelanor

Toolset/palettes/tutorial/courses/First Run/tutorials/To Do List/lessons/App Lesson.txt

@@ -481,7 +481,7 @@ step "Test Delete Task"
 	The task will be deleted from the list.
 action
 	highlight widget "delete"
-	wait until the text of field "taskList" is changed
+	wait until the text of field "taskList" is changed with default ""
 	go to step "Return to Edit Mode 2"
 end step