修改知识点

TEAMModelOS.Service/Models/Syllabus/Knowledge.cs

@@ -13,10 +13,14 @@ namespace TEAMModelOS.Service.Models.Syllabus
     /// <summary>
     /// 知识点
     /// </summary>
-    [CosmosDB(RU = 400, Name = "Knowledge", Cache = true ,Monitor =true)]
+    [CosmosDB(RU = 400, Name = "Knowledge", Cache = true, Monitor = true)]
     [ProtoContract]
-    public class Knowledge: ID
+    public class Knowledge : ID
     {
+
+        public Knowledge() {
+            points = new List<string>();
+        }
         public int? ttl { get; set; }
         [ProtoMember(1)]
         public string id { get; set; }