Try to fix some issues with zsh and nvim

.config/nvim/lua/user/init.lua

@@ -1,4 +1,4 @@
+require("user.packer")
+
 require("user.set")
 require("user.remap")
-
-require("user.packer")

.config/nvim/lua/user/packer.lua

@@ -1,7 +1,7 @@
 -- This file can be loaded by calling `lua require('plugins')` from your init.vim
 
 -- Only required if you have packer configured as `opt`
-vim.cmd [[packadd packer.nvim]]
+vim.cmd.packadd('packer.nvim')
 
 return require('packer').startup(function(use)
 	-- Packer can manage itself