docs(list-group): fix typo

Pooya Parsa · Pooya Parsa · commit 1625e5ec4894 · 2017-12-15T20:45:13.000+03:30
diff --git a/src/components/list-group/README.md b/src/components/list-group/README.md
@@ -189,7 +189,7 @@ flush with the card.
       ad sit ipsum anim Lorem.
     </b-card-body>
   </b-card>
-</b-card group>
+</b-card-group>
 
 
 <!-- list-group-card.vue -->
