add exercise part 2 in hook reducer

Author: alexlobera

src/components/patterns/HookReducer/Page.jsx

@@ -46,7 +46,7 @@ const Page = () => (
  know.
  </p>
 
- <h3>Exercise</h3>
+ <h3>Exercise part 1</h3>
 
  <h4>
  🎯 The goal is to understand how to handle complex state logic in our
@@ -75,7 +75,7 @@ const Page = () => (
 
  <Exercise />
  <hr />
- <h3>Bonus exercise</h3>
+ <h3>Exercise part 2</h3>
  <p>
  <input type="checkbox" /> Create a custom hook from your Login Form. You
  can call it useForm.
@@ -87,6 +87,8 @@ const Page = () => (
  Don't think of state only, but also functions that create "props".
  </li>
  </ul>
+
+ <h3>Bonus exercise</h3>
  </React.Fragment>
 );