Apply quokka pipes rule

lib/music_library_web/telemetry/storage.ex

@@ -17,11 +17,10 @@ defmodule MusicLibraryWeb.Telemetry.Storage do
 
     metric_histories_map =
       metrics
-      |> Enum.map(fn metric ->
+      |> Map.new(fn metric ->
         attach_handler(metric)
         {metric, CircularBuffer.new(@history_buffer_size)}
       end)
-      |> Map.new()
 
     {:ok, metric_histories_map}
   end