chore(vimdoc): Auto update

doc/outline.txt

@@ -349,6 +349,7 @@ Show defaults ~
         -- icon as string.
         ---@param kind string Key of the icons table below
         ---@param bufnr integer Code buffer
+        ---@param symbol outline.Symbol The current symbol object
         ---@returns string|boolean The icon string to display, such as "f", or `false`
         ---                        to fallback to `icon_source`.
         icon_fetcher = nil,
@@ -797,29 +798,28 @@ TIPS                                                            *outline-tips*
     }
 <
 
-The `icon_fetcher` function may also accept a second parameter, the buffer
-number of the code buffer. For example, you can use it to determine the icon to
-use based on the filetype.
+The `icon_fetcher` function may also accept a second and third parameter, the
+buffer number of the code buffer, and the symbol object of type
+`outline.Symbol`. For example, you can use it to determine the icon to use
+based on the filetype.
 
 >lua
     symbols = {
-      icon_fetcher = function(kind, bufnr)
+      icon_fetcher = function(kind, bufnr, symbol)
         local ft = vim.api.nvim_buf_get_option(bufnr, 'ft')
         -- ...
       end,
     }
 <
 
-The `icon_fetcher` function may also accept a third parameter, the symbol which
-type is outline.Symbol. Provider can add extra info to symbol. For example,
-access specifier information can be added at the icon location.
+Or display public, protected, and private symbols differently:
 
 >lua
     symbols = {
       icon_fetcher = function(kind, bufnr, symbol)
         local access_icons = { public = '○', protected = '◉', private = '●' }
         local icon = require('outline.config').o.symbols.icons[kind].icon
-        -- ctags provider add `access` key
+        -- ctags provider might add an `access` key
         if symbol and symbol.access then
           return icon .. ' ' .. access_icons[symbol.access]
         end
@@ -993,7 +993,7 @@ that simply returns in plain text, the first letter of the given kind.
 
 >lua
     symbols = {
-      icon_fetcher = function(kind, bufnr) return kind:sub(1,1) end,
+      icon_fetcher = function(kind, bufnr, symbol) return kind:sub(1,1) end,
     }
 <