Use spelling module for autocommand about spelling

lua/autocommands.lua

@@ -1,10 +1,5 @@
 local markdown = vim.api.nvim_create_augroup("markdown", { clear = true })
-
-local keyunmap = function(mode, binding)
-  if vim.fn.maparg(binding, mode) ~= "" then
-    vim.keymap.del(mode, binding)
-  end
-end
+local spelling = vim.api.nvim_create_augroup("spelling", { clear = true })
 
 -- Recognize .md as pandoc
 vim.api.nvim_create_autocmd({ "BufEnter", "BufWinEnter" }, {
@@ -36,16 +31,8 @@ vim.api.nvim_create_autocmd({ "BufEnter", "BufWinEnter" }, {
 -- Spell shortcuts
 vim.api.nvim_create_autocmd({ "OptionSet" }, {
   pattern = { "spell" },
-  group = markdown,
-  callback = function()
-    if vim.o.spell == true then
-      vim.keymap.set("n", "<Leader>i", "mz[s1z=`z", { noremap = true, silent = true, desc = "f[I]x typo under cursor" })
-      vim.keymap.set("n", "à", "]s", { noremap = true, silent = true, desc = "Go to the next typo" })
-    else
-      keyunmap("n", "<Leader>i")
-      keyunmap("n", "à")
-    end
-  end
+  group = spelling,
+  callback = require('spelling').spell_keymap
 })
 
 -- LaTeX configuration