Update magic-transit-with-cdn.mdx

Fixed the Magic Transit protected prefix from 203.0.113.100/24 to 203.0.113.0/24 to match the examples below.

Author: su-paulo

src/content/docs/byoip/service-bindings/magic-transit-with-cdn.mdx

@@ -22,7 +22,7 @@ Although it is possible to add discrete bindings for non-contiguous CIDR blocks,
 
 <Details header="Example">
 
-**Magic Transit protected prefix:** `203.0.113.100/24`
+**Magic Transit protected prefix:** `203.0.113.0/24`
 
 **IPs to upgrade to the CDN:**