Make treesitter config more explicit

nvim/.config/nvim/lua/plugins/treesitter.lua

@@ -17,6 +17,8 @@ end
 return {
   'nvim-treesitter/nvim-treesitter',
   config = config,
-  build = ':TSUpdate'
+  build = ':TSUpdate',
+  lazy = false,
+  branch = 'master',
 }