remove apostopher from execute

Author: hojatm-huma

patterns/behavioral/command.py

@@ -10,7 +10,7 @@
 We have a menu containing two items. Each item accepts a file name, one hides the file
 and the other deletes it. Both items have an undo option.
 Each item is a MenuItem class that accepts the corresponding command as input and executes
-it's `execute` method when it is pressed.
+it's execute method when it is pressed.
 
 *TL;DR
 Object oriented implementation of callback functions.