update question 3 in hook reducer

Author: alexlobera

src/components/patterns/HookReducer/Page.jsx

@@ -92,14 +92,16 @@ const Page = () => (
  <p>
  By default we are displaying the error message to the user even if the
  user did not use the form. That's not a great user experience. To improve
- that we are going to add another state in our form to identify which
- fields are `dirty`.
+ that we are going to add two more states in our form to identify which
+ fields are `dirty` and if the form is `submitted`.
  </p>
  <p>
  A field is dirty when the value of the field is not equal to the initial
  value, false if the values are equal.
  </p>
 
+ <p>A field is submitted if the form is submitted :D</p>
+
  <h3>Bonus exercise part 1</h3>
  <p>
  We are going to add some state to our form to know when the form is being