fix(配额管理): 修复压测时长没有显示单位的bug

frontend/src/i18n/en-US.js

@@ -936,7 +936,7 @@ export default {
     performance: "Number of performance tests",
     resource_pool: "Available test resource pool",
     max_threads: "Maximum Concurrency",
-    duration: "Stress test duration",
+    duration: "Stress test duration(minutes)",
     use_default: "Use default quota",
     yes: "Yes",
     no: "No",

frontend/src/i18n/zh-CN.js

@@ -938,7 +938,7 @@ export default {
     performance: "性能测试数量",
     resource_pool: "可用测试资源池",
     max_threads: "最大并发数",
-    duration: "压测时长",
+    duration: "压测时长（分钟）",
     use_default: "使用默认配额",
     yes: "是",
     no: "否",

frontend/src/i18n/zh-TW.js

@@ -938,7 +938,7 @@ export default {
     performance: "性能測試數量",
     resource_pool: "可用測試資源池",
     max_threads: "最大並發數",
-    duration: "壓測時長",
+    duration: "壓測時長（分鐘）",
     use_default: "使用默認配額",
     yes: "是",
     no: "否",