message: fix week format test
diff: @@ -74,7 +74,7 @@ describe('resolves the rules', () => {
  expect(resolve(input)).toBe('date_format:YYYY-MM-DDTHH:mm');
  input.type = 'week';
  - expect(resolve(input)).toBe('date_format:YYYY-Www');
  + expect(resolve(input)).toBe('date_format:YYYY-[W]WW');
  input.type = 'month';
  expect(resolve(input)).toBe('date_format:YYYY-MM');
  