Add third article, immage and h2

Author: caro-vh

Wireframe/index.html

@@ -35,6 +35,12 @@ <h2>The Purpose of Wireframes</h2>
       </p>
       <a href="">Read more</a>
     </article>
+    <article>
+      <img src="https://os.novatorsoft.com/nvs-content/medium_branch_nedir_1_a4b3ed668c.webp"
+        alt="a diagram showing git branches" width="700" />
+      <h2>What is a Branch in Git?</h2>
+
+      
   </main>
   <footer>
     <p>