fix(example config): fix config for treesitter (#3016)

utils/installer/config.example.lua

@@ -82,7 +82,7 @@ lvim.builtin.treesitter.ensure_installed = {
 }
 
 lvim.builtin.treesitter.ignore_install = { "haskell" }
-lvim.builtin.treesitter.highlight.enabled = true
+lvim.builtin.treesitter.highlight.enable = true
 
 -- generic LSP settings
 

utils/installer/config_win.example.lua

@@ -97,7 +97,7 @@ lvim.builtin.treesitter.ensure_installed = {
 }
 
 lvim.builtin.treesitter.ignore_install = { "haskell" }
-lvim.builtin.treesitter.highlight.enabled = true
+lvim.builtin.treesitter.highlight.enable = true
 
 -- generic LSP settings