Fix typo in main.py

Author: AileenLumina

main.py

@@ -46,7 +46,7 @@ def confirmation_prompt(program_name: str):
             scripts.remove(MAIN_PY)
         for _dir in dirs:
             if os.path.isfile(os.path.join(_dir, MAIN_PY)):
-                dirs.replace(_dir, _dir[:-1])
+                dirs[dirs.index(_dir)] = _dir[:-1]
         listing = dirs + scripts
         file_menu = AnsiMenu(listing)
         print("Listing for {}:".format(os.getcwd()))