specify how to revert homepage (#37575)

src/metabase/public_settings.clj

@@ -99,7 +99,7 @@
   :visibility :settings-manager)
 
 (defsetting custom-homepage
-  (deferred-tru "Pick a dashboard to serve as the homepage. If people lack permissions to view the selected dashboard, Metabase will redirect them to the default homepage.")
+  (deferred-tru "Pick a dashboard to serve as the homepage. If people lack permissions to view the selected dashboard, Metabase will redirect them to the default homepage. To revert to the default Metabase homepage, simply turn off the toggle.")
   :default    false
   :type       :boolean
   :audit      :getter