Rename TODO section

README.md

@@ -38,5 +38,5 @@ You can't use this program until the config file is generated in the default fol
 ## Editor
 The default editor is `nano`. If you want to use another editor, now I have to edit the source code and change the variable `EDITOR`. In a future update, this customization will be included in the configuration file.
 
-## TO DO
-* Implement custom editor in the configuration file.
+## TODO
+* Implement custom editor in the configuration file.