made file go in another module, just because

example/starter_course/Lesson1/ring.file/meta.json

@@ -2,6 +2,6 @@
 	"type":"file",
 	"title":"a torus: ring.stl",
 	"filename":"../ring.stl",
-	"modules":["Lesson 1"],
+	"modules":["Lesson 1","Course data files"],
 	"destination": "automatically_uploaded_files/a_subfolder"
 }