broken level: Update for falling platform configuration change

The falling platform property change was developed in parallel with the broken
level.

Author: wjt

broken_level.tscn

@@ -328,7 +328,7 @@ fall_time = 0.02
 position = Vector2(-1152, 0)
 width = 2
 one_way = true
-fall_time = 2.0
+fall = true
 
 [node name="Platform6" parent="Platforms" unique_id=1439374545 instance=ExtResource("8_baijo")]
 position = Vector2(-832, 0)
@@ -346,7 +346,7 @@ fall_time = 0.02
 position = Vector2(-192, 0)
 width = 2
 one_way = true
-fall_time = 2.0
+fall = true
 
 [node name="Platform9" parent="Platforms" unique_id=601217625 instance=ExtResource("8_baijo")]
 position = Vector2(128, 0)