nvim: Fix lsp key mapping for markdown files

We forgot to pass through the original on_attach function when loading
the custom marksman one, now fixed.

nvim/.config/nvim/lua/plugins/config/lsp.lua

@@ -157,12 +157,13 @@ lspconfig.nushell.setup({})
 lspconfig.marksman.setup({
 	filetypes = { "markdown", "quarto" },
 	on_attach = function(client, bufnr)
-		-- TODO: for some reason this is always true even though it shouldn't be
+		-- TODO: for some reason this stays true even after rootdir switch?
 		if client.config.in_zk_notebook then
 		    vim.defer_fn(function()
 			    vim.lsp.buf_detach_client(bufnr, client.id)
 		    end, 1000)
 		end
+		on_attach(client, bufnr)
 	end,
 	on_new_config = function(conf, new_root)
 		if require("lspconfig.util").root_pattern(".zk")(new_root) then
@@ -218,6 +219,7 @@ if require("core.util").is_available("arduino") then
 	})
 end
 
+-- attach ltex for fitting ft only when spell checking becomes enabled
 vim.api.nvim_create_autocmd("User", {
 	pattern = "SpellEnable",
 	callback = function()