[APIM] Update availability-zones-service-support.md

Add zonal support

Author: dlepow

articles/reliability/availability-zones-service-support.md

@@ -126,7 +126,7 @@ Azure offerings are grouped into three categories that reflect their _regional_
 | **Products**   | **Resiliency**   |
 | --- | --- |
 | [Azure Application Gateway (V2)](migrate-app-gateway-v2.md) | ![An icon that signifies this service is zone redundant.](media/icon-zone-redundant.svg) ![An icon that signifies this service is zonal.](media/icon-zonal.svg)  |
-| [Azure API Management](migrate-api-mgt.md) | ![An icon that signifies this service is zone redundant.](media/icon-zone-redundant.svg) |
+| [Azure API Management](migrate-api-mgt.md) | ![An icon that signifies this service is zone redundant.](media/icon-zone-redundant.svg) ![An icon that signifies this service is zonal](media/icon-zonal.svg) |
 | [Azure App Configuration](../azure-app-configuration/faq.yml#how-does-app-configuration-ensure-high-data-availability) | ![An icon that signifies this service is zone redundant.](media/icon-zone-redundant.svg) |
 | [Azure App Service](./reliability-app-service.md#availability-zone-support) | ![An icon that signifies this service is zone redundant.](media/icon-zone-redundant.svg) |
 | [Azure App Service: App Service Environment](./reliability-app-service.md#availability-zone-support) | ![An icon that signifies this service is zone redundant.](media/icon-zone-redundant.svg) ![An icon that signifies this service is zonal](media/icon-zonal.svg) |