refactor: return function from lspconfig

lua/lsp/init.lua

@@ -1,3 +1,4 @@
+return function()
   local lspconfig = require("lspconfig")
 
   lspconfig.lua_ls.setup({
@@ -26,3 +27,4 @@ lspconfig.lua_ls.setup({
   lspconfig.nixd.setup({})
   lspconfig.marksman.setup({})
   lspconfig.tinymist.setup({})
+end

lua/plugins/lz-spec.lua

@@ -15,9 +15,7 @@ return {
   {
     "nvim-lspconfig",
     event = "BufEnter",
-    after = function()
-      require("lsp")
-    end,
+    after = require("lsp"),
   },
   {
     "which-key.nvim",