[nvim] Suppress diagnostics on Markdown file load

nvim/lua/config/autocmds.lua

@@ -6,3 +6,9 @@
 --
 -- Or remove existing autocmds by their group name (which is prefixed with `lazyvim_` for the defaults)
 -- e.g. vim.api.nvim_del_augroup_by_name("lazyvim_wrap_spell")
+
+vim.api.nvim_create_autocmd("BufEnter", {
+  callback = function(args)
+    vim.diagnostic.enable(vim.bo[args.buf].filetype ~= "markdown" and true or false)
+  end,
+})