Add alt text

Author: JimMadge

index.html

@@ -344,7 +344,11 @@ <h2>Jupyter Book</h2>
         <section>
           <h2>The Turing Way</h2>
           <a href="https://book.the-turing-way.org" data-preview-link>
-            <img src="static/pathway.svg" style="height: 11em" />
+            <img
+                alt="The Turing Way project is illustrated as a road or path with shops for different data science skills. People can go in and out with their shopping cart and pick and choose what they need."
+              src="static/pathway.svg"
+              style="height: 11em"
+            />
           </a>
           <br />
           <a href="book.the-turing-way.org" target="_blank"