wro4j inspected folders

Hi !

I try to follow the "Create new formatter" tuto, but i need more details about the step 4 :

`Add a custom less file in wro4j inspected folders and link it to your formatter`

Where is this folder ?

Thanks.

Start with the "Create new formatter" tutorial and inspect step 4, especially the reference to wro4j inspected folders. Identify the folder location and explain how a custom LESS file should be added and linked to the formatter. Done means the tutorial provides enough detail for a reader to complete that step without guessing.

Written by the indexing model from the issue text.