document update

README.md

@@ -195,7 +195,6 @@ Nondefault configuration example:
 
 require'navigator'.setup({
   debug = false, -- log output, set to true and log path: ~/.local/share/nvim/gh.log
-  code_action_icon = " ",
   width = 0.75, -- max width ratio (number of cols for the floating window) / (window width)
   height = 0.3, -- max list window height, 0.3 by default
   preview_height = 0.35, -- max height of preview windows
@@ -235,7 +234,7 @@ require'navigator'.setup({
     -- to disable all default config and use your own lsp setup set
     -- disable_lsp = 'all'
     -- Default {}
-    diagnostic_scroll_bar_sign = {'▃', '█'}, -- experimental:  diagnostic status in scroll bar area; set to nil to disable the diagnostic sign,
+    diagnostic_scroll_bar_sign = {'▃', '▆', '█'}, -- experimental:  diagnostic status in scroll bar area; set to nil to disable the diagnostic sign,
     -- for other style, set to {'╍', 'ﮆ'} or {'-', '='}
     diagnostic_virtual_text = true,  -- show virtual for diagnostic message
     diagnostic_update_in_insert = false, -- update diagnostic message in insert mode