Update index.html to add mailing list

Author: wyattrlindsey

index.html

@@ -51,7 +51,7 @@ <h3 class="text-center">
 
 <div class="button-wrapper">
     <a class="uk-button uk-button-primary uk-flex uk-flex-center"
-        href="https://forms.gle/irGnA7q1N9zEF2TU9"
+        href="https://docs.google.com/forms/d/e/1FAIpQLSfG14LQFq_9l7SBFs-d9aOvDKiWz4K2mFPTPag5p0uIk7eDSA/viewform"
         target="blank" rel="noopener">
         <span class="button-icon" uk-icon="icon: mail"></span>
         <span>Join Our Mailing List</span>