chore: update typespec for query/2

Author: joeljuca

lib/swiss_schema.ex

@@ -386,7 +386,7 @@ defmodule SwissSchema do
   """
   @doc group: "SwissSchema API"
   @callback query(hook :: (Ecto.Query.t() -> Ecto.Query.t()), opts :: Keyword.t()) ::
-              {:ok, list(map())}
+              {:ok, list(Ecto.Schema.t())}
 
   @doc """
   Returns a lazy enumerable that emits all entries from the data store.