Update flex-consumption-plan.md

Add App Configuration limitation when behind a VNet.

Author: nzthiago

articles/azure-functions/flex-consumption-plan.md

@@ -141,7 +141,7 @@ Keep these other considerations in mind when using Flex Consumption plan:
 + **Managed dependencies**: [Managed dependencies in PowerShell](functions-reference-powershell.md#managed-dependencies-feature) aren't supported by Flex Consumption. You must instead [upload modules with app content](functions-reference-powershell.md#including-modules-in-app-content).
 + **Diagnostic settings**: Diagnostic settings aren't currently supported.
 + **Certificates**: Loading certificates with the WEBSITE_LOAD_CERTIFICATES app setting, managed certificates, app service certificates, and other platform certificate-based features are currently not supported.
-+ **Key Vault References**: Key Vault references in app settings don't work when Key Vault is network access restricted, even if the function app has Virtual Network integration. The current workaround is to directly reference the Key Vault in code and read the required secrets.
++ **Key Vault and App Configuration References**: [Key Vault](../app-service/app-service-key-vault-references.md) and [App Configuration](../app-service/app-service-configuration-references.md) references in app settings don't work when Key Vault or App Configuration are network access restricted, even if the function app has Virtual Network integration. The current workaround is to directly reference the Key Vault or App Configuration using client libraries in code and read the required secrets.
 + **Timezones**: `WEBSITE_TIME_ZONE` and `TZ` app settings are not currently supported when running on Flex Consumption plan.
 
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