Add missing alt texts to HF logo images

Author: kukimik

templates/footer.html

@@ -53,7 +53,7 @@
 
     <div class="flex flex-row">
       <div class="mt-16 flex flex-col text-center flex-grow lg:flex-row lg:space-x-8 lg:space-y-0">
-        <img src="/assets/images/logos/hf-logo-100-alpha.png" class="h-8" />
+        <img src="/assets/images/logos/hf-logo-100-alpha.png" class="h-8" alt="Logo of the Haskell Foundation"/>
         <div class="font-medium">2024 © Haskell Foundation, <a href="https://github.com/haskellfoundation/haskellfoundation.github.io">submit website bug reports and fixes on GitHub</a></div>
       </div>
 

templates/mobile-nav-flyout.html

@@ -5,7 +5,7 @@
   <div class="pt-6 flex justify-between">
 
     <div>
-      <img src="/assets/images/logos/hf-logo-100-alpha.png" width="68" height="52" />
+      <img src="/assets/images/logos/hf-logo-100-alpha.png" width="68" height="52" alt="Logo of the Haskell Foundation"/>
       <div class="text-sm mt-2 text-gray-500">The Haskell Foundation</div>
     </div>
 

templates/nav.html

@@ -2,7 +2,7 @@
 
   <div>
     <a href="/">
-      <img src="/assets/images/logos/hf-logo-100-alpha.png" />
+      <img src="/assets/images/logos/hf-logo-100-alpha.png" alt="The Haskell Foundation homepage"/>
       <div class="text-sm mt-2 text-gray-500"></div>
     </a>
   </div>