Sort metadata before printing (#12440)

Author: moogle19

lib/elixir/lib/io/ansi/docs.ex

@@ -78,7 +78,9 @@ defmodule IO.ANSI.Docs do
  @metadata_filter [:deprecated, :guard, :since]
 
  defp print_each_metadata(metadata, options) do
- Enum.reduce(metadata, false, fn
+ metadata
+ |> Enum.sort()
+ |> Enum.reduce(false, fn
  {key, value}, _printed when is_binary(value) and key in @metadata_filter ->
  label = metadata_label(key, options)
  indent = String.duplicate(" ", length_without_escape(label, 0) + 1)