Revert "Update example-formik.md (testing-library#692)" (testing-library#876)

This reverts commit e8524e8.

Author: eps1lon

docs/example-formik.md

@@ -75,7 +75,7 @@ test('rendering and submitting a basic Formik form', async () => {
  email: 'john.dee@someemail.com',
  firstName: 'John',
  lastName: 'Dee',
- }, expect.anything())
+ })
  )
 })
 ```