chore: fix failing test.

test/smokestack/option_test.exs

@@ -78,6 +78,6 @@ defmodule Smokestack.OptionTest do
   test "it validates all options" do
     assert {:error, error} = insert(Author, sss: 2)
     message = Exception.message(error)
-    assert message =~ ~r/required :[a-z]+ option not found/
+    assert message =~ ~r/unknown option/
   end
 end