Do you expect guide about how to rename folder? Are you serious?
Is that hard to press right click at folder and use rename function?
As I said in my previous post, you will have to edit Config.java to edit config folders name.
Open this file, and for example take a look, there is String with correct path to the config file.
Lets say for example Characters.properties
It should be self-explanatory, use your brain if u wanna create new project >.>