Fix index modifiers title

docs/index.html

@@ -438,7 +438,7 @@ route: index
     <div class="columns is-vcentered">
       <div class="column">
         <h3 class="title is-2">
-          <a href="{{ site.url }}/documentation/modifiers/syntax/">
+          <a href="{{ site.url }}/documentation/modifiers/syntax/" style="display: block;">
             <span class="icon is-medium">
               <i class="fa fa-cogs"></i>
             </span>