docs: update builtin.file_browser options (#887)

lua/telescope/builtin/init.lua

@@ -69,7 +69,8 @@ builtin.fd = builtin.find_files
 ---       create the file `init.lua` inside of `lua/telescope` and will create the necessary folders (similar to how
 ---       `mkdir -p` would work) if they do not already exist
 ---@param opts table: options to pass to the picker
----@field search_dirs table: directory/directories to search in
+---@field cwd string: directory path to browse (default is cwd)
+---@field depth number: file tree depth to display (default is 1)
 builtin.file_browser = require('telescope.builtin.files').file_browser
 
 --- Lists function names, variables, and other symbols from treesitter queries