Fix missing edit links

Add the title prefix and suffix for recommendation block titles, which
fixes the missing edit links so the blocks are editable.

References #146

web/themes/custom/opdavies/templates/block/block--inline-block--recommendation.html.twig

@@ -1,5 +1,7 @@
-<article class="recommendation mt-8 first-of-type:mt-0">
+<article{{ attributes.addClass('recommendation mt-6 first-of-type:mt-0') }}>
+  {{ title_prefix }}
   <h2>{{ label }}</h2>
+  {{ title_suffix }}
 
   <div
     class="