Updated from customer support suggestion

Author: flang-msft

articles/azure-cache-for-redis/cache-how-to-monitor.md

@@ -168,7 +168,7 @@ In contrast, for clustered caches, we recommend using the metrics with the suffi
     - **AADAuthenticationFailure** (preview) - when there's an authentication failure using Microsoft Entra access token
     - **AADTokenExpired** (preview) - when a Microsoft Entra access token used for authentication isn't renewed and it expires.
 > [!NOTE]
-> Errors metrics isn't available for Enterprise Tiers.
+> Metrics for errors aren't available when using the Enterprise Tiers.
 
 - Evicted Keys
   - The number of items evicted from the cache during the specified reporting interval because of the `maxmemory` limit.