Add alt tags

Author: meiamsome

landing-page.html

@@ -56,10 +56,10 @@ <h2>Support The Coding Train</h2>
     {% capture patreonLogo %}{% include 4-vector-graphics/patreon.svg %}{% endcapture %}
     {% include 3-modules/hero-item.html image=patreonLogo title='Consider supporting?' content='Support The Coding Train on Patreon and get some awesome rewards!' url=site.links.patreon cta='Become a Patron' class='patreon' %}
 
-    {% capture merchStoreImage %}<img src="{{ '/assets/images/merch-store.png' | relative_url }}" />{% endcapture %}
+    {% capture merchStoreImage %}<img alt='The Coding Train Merchandise Store' src="{{ '/assets/images/merch-store.png' | relative_url }}" />{% endcapture %}
     {% include 3-modules/hero-item.html image=merchStoreImage title='Want more of The Coding Train in your life?' content='Visit the merch store and get some shirts, mugs and more!' url=site.links.merch cta='Get some merch' class='merch-store' %}
 
-    {% capture amazonStoreImage %}<img src="{{ '/assets/images/amazon-store.png' | relative_url }}" />{% endcapture %}
+    {% capture amazonStoreImage %}<img alt='The Coding Train Amazon Store' src="{{ '/assets/images/amazon-store.png' | relative_url }}" />{% endcapture %}
     {% include 3-modules/hero-item.html image=amazonStoreImage title="Haven't learned enough?" content='Read one of the books featured on The Coding Train!' url=site.links.amazon cta='Start reading' class='amazon-store' %}
   </div>
 </div>