Very Confusing 1.20.1 Markers wiki

[Kettle5000]

First of all there seems to be nothing because i cant find anything explaining how to add markers using resourcepacks
I tried making a resourcepack adding new textures on assets\antiqueatlas\textures\gui\markers
and json files on assets\antiqueatlas\atlas\markers
but nothing is added in game.
What am i missing?

example of json files:

anvil.json

{
	"version": 1,
	"textures": [
		"antiqueatlas:textures/gui/markers/anvil.png"
	]
}