docs: fix the default value in README

README.md

@@ -275,7 +275,9 @@ See [default configuration](https://github.com/nvim-telescope/telescope.nvim#tel
   ---@param fzy_score number
   ---@return number
   scoring_function = function(recency, fzy_score)
-    return (10 / (recency == 0 and 1 or recency)) - 1 / fzy_score
+    local score = (10 / (recency == 0 and 1 or recency)) - 1 / fzy_score
+    -- HACK: -1 means FILTERED, so return a bit smaller one.
+    return score == -1 and -1.000001 or score
   end,
   ```