[nvim] fix: call packer *after* downloading it

.config/nvim/lua/plugin/packer.lua

@@ -4,7 +4,6 @@
 -- Description   : neovim packer config file
 
 
-local packer = require("packer")
 local install_path = vim.fn.stdpath("data") .. "/site/pack/packer/start/packer.nvim"
 if vim.fn.empty(vim.fn.glob(install_path)) > 0 then
     print("Cloning packer...")
@@ -20,6 +19,8 @@ if vim.fn.empty(vim.fn.glob(install_path)) > 0 then
     print("Done.")
 end
 
+local packer = require("packer")
+
 packer.init({
     display = {
         working_sym = '  ', -- The symbol for a plugin being installed/updated