mention Scala on landing page

Author: SethTisue

src/templates/home.template.html

@@ -8,7 +8,7 @@
     <h1 class="bulma-title bulma-is-1 bulma-is-size-3-mobile">
       We develop industry-proven, <br class="bulma-is-hidden-mobile">
       state-of-the-art libraries for <br class="bulma-is-hidden-mobile">
-      functional programming.
+      functional programming in <a href="https://scala-lang.org/">Scala</a>.
     </h1>
     <h2 class="bulma-subtitle bulma-is-3 bulma-is-size-4-mobile">
       Start building scalable, performant applications <br class="bulma-is-hidden-mobile">