perf: load tokyonight.nvim in the intended way (nvim-lua#1360)

Fixes nvim-lua#1357

Author: warbacon

init.lua

@@ -886,14 +886,18 @@ require('lazy').setup({
     -- If you want to see what colorschemes are already installed, you can use `:Telescope colorscheme`.
     'folke/tokyonight.nvim',
     priority = 1000, -- Make sure to load this before all the other start plugins.
-    init = function()
+    config = function()
+      ---@diagnostic disable-next-line: missing-fields
+      require('tokyonight').setup {
+        styles = {
+          comments = { italic = false }, -- Disable italics in comments
+        },
+      }
+
       -- Load the colorscheme here.
       -- Like many other themes, this one has different styles, and you could load
       -- any other, such as 'tokyonight-storm', 'tokyonight-moon', or 'tokyonight-day'.
       vim.cmd.colorscheme 'tokyonight-night'
-
-      -- You can configure highlights by doing something like:
-      vim.cmd.hi 'Comment gui=none'
     end,
   },