fix(plugins): typo of pin commit of `treesitter` (#2046)

lua/lvim/plugins.lua

@@ -133,7 +133,7 @@ return {
   -- Treesitter
   {
     "nvim-treesitter/nvim-treesitter",
-    commit = commit.treesitter,
+    commit = commit.nvim_treesitter,
     branch = vim.fn.has "nvim-0.6" == 1 and "master" or "0.5-compat",
     -- run = ":TSUpdate",
     config = function()