Merge pull request #210554 from cebundy/subnet-cidr-note

[Container Apps]: Add note regarding subnet CIDR for Container Apps environment

Author: prmerger-automator[bot]

articles/container-apps/networking.md

@@ -149,7 +149,8 @@ The second URL grants access to the log streaming service and the console. If ne
 
 ## Ports and IP addresses
 
-The subnet associated with a Container App Environment must have a CIDR prefix of /23.
+>[!NOTE]
+> The subnet associated with a Container App Environment requires a CIDR prefix of /23.
 
 The following ports are exposed for inbound connections.
 

articles/container-apps/vnet-custom-internal.md

@@ -118,6 +118,9 @@ $vnet = New-AzVirtualNetwork @VnetArgs
 
 ---
 
+> [!NOTE]
+> Network subnet address prefix requires a CIDR range of `/23`.
+
 With the VNET established, you can now query for the infrastructure subnet ID.
 
 # [Bash](#tab/bash)