remove 'simple' -- is it like 'just'?

Author: dstndstn

_episodes/04-files.md

@@ -5,7 +5,7 @@ exercises: 0
 questions:
 - "How can I do the same operations on many different files?"
 objectives:
-- "Use a library function to get a list of filenames that match a simple wildcard pattern."
+- "Use a library function to get a list of filenames that match a wildcard pattern."
 - "Write a for loop to process multiple files."
 keypoints:
 - "Use `glob.glob(pattern)` to create a list of files whose names match a pattern."