Adding custom world preset to world creation menu

I don't know how to add the 'minecraft:normal' tag to my code to make my custom world preset appear in the world creation menu. This is my current code:
  "dimensions": {
    "minecraft:overworld": {
      "type": "minecraft:overworld",
      "generator": {
        "type": "minecraft:noise",
        "settings": "minecraft:overworld",
        "biome_source": {
          "type": "minecraft:fixed",
          "biome": "minecraft:desert"
        }
      }
    }
  }
}```