Add warning to block page

Author: maxvp

src/content/docs/cloudflare-one/policies/gateway/block-page.mdx

@@ -13,6 +13,12 @@ Configuring a custom block page in Zero Trust helps avoid this confusion. Your b
 
 Gateway supports custom block pages for DNS and HTTP policies.
 
+:::caution[Third-party filtering conflict]
+
+<Render file="gateway/third-party-warning" />
+
+:::
+
 ## Prerequisites
 
 In order to display the block page as the URL of the blocked domain, your devices must have the [Cloudflare certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/manual-deployment/) installed. Enterprise users can also [deploy their own root CA certificate](/cloudflare-one/connections/connect-devices/warp/user-side-certificates/custom-certificate/).

src/content/partials/cloudflare-one/gateway/third-party-warning.mdx

@@ -4,4 +4,4 @@
 
 Gateway will not properly filter traffic sent through third-party VPNs or other Internet filtering software, such as [iCloud Private Relay](https://support.apple.com/102602). To ensure your DNS policies apply to your traffic, Cloudflare recommends turning off software that may interfere with Gateway.
 
-To turn off iCloud Private Relay, refer to the Apple user guides for [Mac](https://support.apple.com/guide/mac-help/use-icloud-private-relay-mchlecadabe0/mac) or [iPhone](https://support.apple.com/guide/iphone/protect-web-browsing-icloud-private-relay-iph499d287c2/ios).
+To turn off iCloud Private Relay, refer to the Apple user guides for [macOS](https://support.apple.com/guide/mac-help/use-icloud-private-relay-mchlecadabe0/) or [iOS](https://support.apple.com/guide/iphone/protect-web-browsing-icloud-private-relay-iph499d287c2/).