note on client-side rendering for interstitial pages

Author: patriciasantaana

src/content/docs/turnstile/concepts/hostname-management.mdx

@@ -63,4 +63,10 @@ If the widget is embedded on a hostname not listed, it will display an error mes
 
 Customers with Enterprise Bot Management or Enterprise Turnstile can have the optional `any hostname` validation entitlement.
 
-By default, a widget requires at least one hostname to be entered. With this entitlement, you can create and use a widget without entering any hostnames for the widget. Contact your account team to enable this entitlement.
+By default, a widget requires at least one hostname to be entered. With this entitlement, you can create and use a widget without entering any hostnames for the widget. 
+
+Contact your account team to enable this entitlement.
+
+:::caution
+Customers enabling client-side rendering on interstitial pages must validate their hostnames.
+:::