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",

frontend/src/locales/zh-CN.json

@@ -6624,8 +6624,8 @@
     "billingSubtitle": "多云成本统计、记录与预警",
     "syncYesterday": "同步昨日",
     "syncBillingHint": "从已配置 AK 的云账号拉取昨日账单",
-    "syncBillingInfo": "点击「同步昨日」将从多云账号中的活跃账号自动拉取账单，按产品+地域写入成本记录。当前支持阿里云。",
-    "syncBillingTiming": "出账时效：阿里云日账单通常 T+1 生成（昨日账单建议今日 10:00 后同步）；预付费订单可能当日可见，后付费按小时计费产品延迟 1 天。AK 需具备 bss:DescribeBillList 权限。",
+    "syncBillingInfo": "点击「同步昨日」将从已接入账单 API 的活跃账号自动拉取账单，按产品+地域写入成本记录。当前支持阿里云、腾讯云。",
+    "syncBillingTiming": "出账时效：日账单通常 T+1 生成（昨日账单建议今日 10:00 后同步）。阿里云 AK 需具备 bss:DescribeBillList 权限；腾讯云密钥需具备 billing:DescribeBillDetail 权限。",
     "syncBillingSuccess": "账单同步成功",
     "syncBillingPartial": "部分账号同步失败",
     "syncBillingFailed": "账单同步失败",