docs: 更新腾讯云账单同步提示

- 标明阿里云与腾讯云均支持账单同步
- 补充腾讯云DescribeBillDetail权限说明

frontend/src/locales/en-US.json

@@ -6624,8 +6624,8 @@
     "billingSubtitle": "Multi-cloud cost statistics, records and alerts",
     "syncYesterday": "Sync Yesterday",
     "syncBillingHint": "Pull yesterday's bill from cloud accounts with AK configured",
-    "syncBillingInfo": "Sync pulls bills from active cloud accounts (product + region). Aliyun supported now.",
-    "syncBillingTiming": "Billing latency: Aliyun daily bills are usually T+1 (sync yesterday after 10:00 today). Postpaid hourly products may lag ~1 day. AK needs bss:DescribeBillList.",
+    "syncBillingInfo": "Sync pulls bills from active accounts with billing API support (product + region). Aliyun and Tencent Cloud are supported.",
+    "syncBillingTiming": "Daily bills are usually available on T+1 (sync yesterday after 10:00 today). Aliyun AK needs bss:DescribeBillList; Tencent Cloud credentials need billing:DescribeBillDetail.",
     "syncBillingSuccess": "Billing sync succeeded",
     "syncBillingPartial": "Some accounts failed to sync",
     "syncBillingFailed": "Billing sync failed",