Update group.md

Author: QianLin-Jiaxi

src/api/v1/group.md

@@ -186,6 +186,8 @@ user {
     user_id: "7356666" // 用户ID
     name: "Feng" // 用户名
     avatar_url: "https://..." // 头像URL
+    is_vip: 0 // 是否为vip用户, 0-不为vip用户, 1-vip用户
+    
   }
   permission_level: 100 // 权限等级, 群主100 管理员2 普通用户无/0
   gag_time: 123456 // 禁言时间戳
@@ -203,19 +205,20 @@ message list_member {
     repeated User user = 2;
     
     message User {
-        string group_id = 1;
-        User_info user_info = 2;
-        
-        message User_info {
-            string user_id = 1;
-            string name = 2;
-            string avatar_url = 4;
-        }
+      string group_id = 1;
+      User_info user_info = 2;
+
+      message User_info {
+          string user_id = 1;
+          string name = 2;
+          string avatar_url = 4;
+          int32 is_vip = 6;
+      }
         
-        int32 permission_level = 3;
-        uint64 gag_time = 4; // 禁言时间
-        int32 is_gag = 5; // 是否被禁言
-    }
+      int32 permission_level = 3;
+      int64 gag_time = 4; // 禁言时间
+      int32 is_gag = 5; c
+  }
 }
 ```