Add missing class in the list-group example with links (#23677)

diff --git a/docs/4.0/components/list-group.md b/docs/4.0/components/list-group.md
index 8dc25a0dca6b172721218c802dd36efb4553a55c..5fad36d5a615826aab1fc77ee8d81521dc10a0bc 100644 (file)
--- a/docs/4.0/components/list-group.md
+++ b/docs/4.0/components/list-group.md
@@ -56,7 +56,7 @@ Be sure to **not use the standard `.btn` classes here**.
 
 {% example html %}
 <div class="list-group">
-  <a href="#" class="list-group-item active">
+  <a href="#" class="list-group-item list-group-item-action active">
     Cras justo odio
   </a>
   <a href="#" class="list-group-item list-group-item-action">Dapibus ac facilisis in</a>