doc: 增加createdAt和endAt属性

types/assignment/codework/CodeWorkDeployRecord.raml

@@ -35,4 +35,10 @@ properties:
   deployEnvironment:
     type: DeployEnvironment
     description: 部署对应环境
+  createdAt:
+    type: datetime
+    description: 部署开始的时间
+  endAt:
+    type: datetime
+    description: 部署结束的时间