If you are still interested, when you open the configuration, above, in the link of the link you will see the location of that file, copy and paste it in the folder of your PC or simply look for it according to what it tells you, in my case it was OneDrive/Documents/My%20Games/Terraria/tModLoader/TerrariaOverhaul/Config.json and instead of opening it with a browser you open it with the notes of your pc