Merge pull request #286192 from dlepow/patch-316

[APIC] Update virtual-network-workspaces-resources.md

Author: prmerger-automator[bot]

articles/api-management/virtual-network-workspaces-resources.md

@@ -27,9 +27,8 @@ For information about networking options in API Management, see [Use a virtual n
 
 * The virtual network must be in the same region and Azure subscription as the API Management instance.
 
-## Subnet size
+## Subnet requirements
 
-* The subnet size must be `/24` (256 IP addresses).
 * The subnet can't be shared with another Azure resource, including another workspace gateway.
 
 ## Subnet delegation