improve docs

Author: broccolinisoup

docs/content/drafts/UnderlineNav2.mdx

@@ -152,7 +152,7 @@ const Navigation = () => {
     name="loadingCounters"
     type="boolean"
     defaultValue="false"
-    description="Whether all of the counters are in loading state"
+    description="Whether the navigation items are in loading state. Component waits for all the counters to finish loading to prevent multiple layout shifts."
   />
   <PropsTableRow
     name="afterSelect"