update MD by dispatch event pingcap/docs release-cloud

Author: github-actions

markdown-pages/en/tidbcloud/master/tidb-cloud/tidb-cloud-billing.md

@@ -123,8 +123,10 @@ See the detailed pricing for each available Alibaba Cloud region below.
 | Resource | Singapore |
 |----------|-----------|
 | Compute (per RCU/month) | $0.24 |
-| Row-based storage (per GiB/month) | $0.36 |
-| Columnar storage (per GiB/month) | $0.09 |
+| Row storage (per GiB/month) | $0.24 |
+| Column storage (per GiB/month) | $0.06 |
+| Row storage with enhanced encryption at rest (per GiB/month) | $0.36 |
+| Column storage with enhanced encryption at rest (per GiB/month) | $0.09 |
 
 > **Tip:**
 >