KST-23: fold dates more meaningfully

src/app/core/service-detail/service-detail.component.html

@@ -153,7 +153,7 @@
       <div class="flex-grow-1">
         {{history.description}}
       </div>
-      <div class="d-flex flex-sm-row flex-column p-3">
+      <div class="d-flex flex-md-row flex-column p-3">
         <div class="pr-sm-1" style="white-space: nowrap;">
           {{history.createdAt | date: 'yyyy. MMM dd.'}}
         </div>