frontpage: Optimize version getting

This was reversing the array for no reason. We can just pick the last element directly

Author: gonX

site/_layouts/frontpage.html

@@ -3,7 +3,7 @@
 ---
 <section class="py-5 text-center">
     <h1 class="col-lg-6 col-md-8 mx-auto">{{ site.title }}</h1>
-    <h5 class="my-2 text-center">v{{ site.data.otd-versions | reverse | first }}</h5>
+    <h5 class="my-2 text-center">v{{ site.data.otd-versions | last }}</h5>
     {{ content }}
 </section>
 {% include platformcards.html %}