change haskell formatter to fourmolu

lua/plugins/formatting.lua

@@ -10,7 +10,7 @@ return {
     dependencies = { 'nvim-treesitter/nvim-treesitter' },
     ft = { 'html', 'svelte', 'astro', 'vue', 'typescriptreact', 'php', 'blade' },
   },
-{
+  {
     "stevearc/conform.nvim",
     optional = true,
     opts = {
@@ -33,10 +33,10 @@ return {
         ["handlebars"] = { "prettier" },
         ["toml"] = {"taplo"},
         ["tex"] = {"latexindent"},
-      ["haskell"] = {"ormolu"},
+        ["haskell"] = {"fourmolu"},
         ["nix"] = {"nixpkgs-fmt"},
         ["lua"] = {"stylua"},
       },
     },
-}
+  }
 }