providing an alt message for accesibilty compliance

Author: Tobias-Amaechina

Wireframe/index.html

@@ -25,7 +25,7 @@ <h2>What is the Purpose of a Readme File?</h2>
         <a href="https://en.wikipedia.org/wiki/README">Read more</a>
       </article>
       <article>
-        <img src="Wireframe.png" alt="" />
+        <img src="Wireframe.png" alt="A Wireframe diagram"/>
         <h2>What is the Purpose of a Wireframe?</h2>
         <p>
          <strong>In short</strong>, a wireframe’s purpose is to visualize the skeleton of a digital product,