Fix mismatched tags.

Author: myShoggoth

index.html

@@ -10,7 +10,7 @@
           <div class="border border-purple-100 p-1 lg:p-3">
             <div class="border border-purple-50 p-16 flex flex-col items-center text-center">
               <h1 class="mb-4 text-3xl-6xl font-w-800">The Haskell Foundation</h1>
-              <h3 class="mb-4 text-xl text-gray-500">Amplify Haskell’s impact on humanity.</h5>
+              <h3 class="mb-4 text-xl text-gray-500">Amplify Haskell’s impact on humanity.</h3>
               <div class="text-gray-500">An independent, non-profit organization dedicated to broadening the adoption of Haskell, by supporting its ecosystem of tools, libraries, education, and research.</div>
             </div>
           </div>