Fix packer.nvim style example config miss

Author: mimikun

README.adoc

@@ -150,10 +150,10 @@ require('jetpack.packer').startup(function(use)
   use {'dracula/vim', as = 'dracula' }
   use {'tpope/vim-fireplace', ft = 'clojure' },
   use {'nvim-treesitter/nvim-treesitter',
-    run = ':TSUpdate',
+    cmd = ':TSUpdate',
     config = function()
       require'nvim-treesitter.configs'.setup {
-        ensure_installed = 'maintained',
+        ensure_installed = { "c", "lua", "vim", "vimdoc", "query" },
         highlight = { enable = true }
       }
     end
@@ -178,10 +178,10 @@ require('jetpack.packer').add {
   {'dracula/vim', as = 'dracula' },
   {'tpope/vim-fireplace', ft = 'clojure' },
   {'nvim-treesitter/nvim-treesitter',
-    run = ':TSUpdate',
+    cmd = ':TSUpdate',
     config = function()
       require'nvim-treesitter.configs'.setup {
-        ensure_installed = 'maintained',
+        ensure_installed = { "c", "lua", "vim", "vimdoc", "query" },
         highlight = { enable = true }
       }
     end