chore(docs): Update readme

lua/symbols-outline/config.lua

@@ -22,7 +22,8 @@ M.defaults = {
   fold_markers = { '', '' },
   wrap = false,
   focus_on_open = true,
-  keymaps = { -- These keymaps can be a string or a table for multiple keys
+  keymaps = {
+    show_help = '?',
     close = { '<Esc>', 'q' },
     goto_location = '<Cr>',
     focus_location = 'o',
@@ -30,7 +31,6 @@ M.defaults = {
     toggle_preview = 'K',
     rename_symbol = 'r',
     code_actions = 'a',
-    show_help = '?',
     fold = 'h',
     fold_toggle = '<tab>',
     fold_toggle_all = '<S-tab>',