fix: correct file encoding and format for Chinese documents

Signed-off-by: cchongyang <2797137626@qq.com>

Author: cchongyang

docs/proposal/map-in-map_management_enhancement-zh.md

@@ -1,66 +1,67 @@
----
-title: map-in-map 管理增强
-authors:
-- "@nlgwcy"
-reviewers:
-- "@hzxuzhonghu"
-- "@supercharge-xsy"
-- "@bitcoffeeiux"
-approvers:
-- "@robot"
-- TBD
-
-creation-date: 2024-07-20
-
----
-
-## map-in-map 管理增强
-
-### 摘要
-
-在 ads 模式下，支持基于 map-in-map 记录的弹性伸缩，以满足大规模集群的流量管理需求。
-
-### 动机
-
-正如 [optimizing_bpf_map_update_in_xDS_mode](https://github.com/kmesh-net/kmesh/blob/main/docs/proposal/optimizing_bpf_map_update_in_xDS_mode-en.md) 中提到的，为了解决 map-in-map 记录更新缓慢的问题，Kmesh 通过以空间换时间的方式在启动时一次性创建所有记录。在小规模集群场景下不会出现这个问题，但是，当支持大规模集群（例如，5000 个服务和 100,000 个 Pod）时，map-in-map 表中定义的大小非常大，并且 `BPF_MAP_TYPE_ARRAY_OF_MAPS` 类型的 map 不支持 `BPF_F_NO_PREALLOC`，这会导致大量的内存浪费。必须支持 map-in-map 记录的弹性伸缩，以满足大规模集群的流量管理需求。
-
-#### 目标
-
-- 支持大规模集群中的流量管理。
-- 考虑配置恢复场景。
-
-### 提案
-
-Kmesh 在用户模式下管理 map-in-map 的使用。为了支持弹性伸缩，管理结构扩展如下：
-
-```c
-struct inner_map_mng {
-    int inner_fd;
-    int outter_fd;
-    struct bpf_map_info inner_info;
-    struct bpf_map_info outter_info;
-    struct inner_map_stat inner_maps[MAX_OUTTER_MAP_ENTRIES];
-    int elastic_slots[OUTTER_MAP_ELASTIC_SIZE];
-    int used_cnt;           // real used count
-    int alloced_cnt;        // real alloced count
-    int max_alloced_idx;    // max alloced index, there may be holes.
-    int init;
-    sem_t fin_tasks;
-    int elastic_task_exit;  // elastic scaling thread exit flag
-};
-
-struct inner_map_stat {
-    int map_fd;
-    unsigned int used : 1;
-    unsigned int alloced : 1;
-    unsigned int resv : 30;
-};
-```
-
-Map-in-map 伸缩过程：
-
-![map-in-map-elastic-process](pics/map-in-map-elastic-process.svg)
-
-以下是 map-in-map 缩容和扩容的示例：
-
-![map-in-map-elastic](pics/map-in-map-elastic.svg)
+---
+title: map-in-map ������ǿ
+authors:
+- "@nlgwcy"
+reviewers:
+- "@hzxuzhonghu"
+- "@supercharge-xsy"
+- "@bitcoffeeiux"
+approvers:
+- "@robot"
+- TBD
+
+creation-date: 2024-07-20
+
+---
+
+## map-in-map ������ǿ
+
+### ժҪ
+
+�� ads ģʽ�£�֧�ֻ��� map-in-map ��¼�ĵ�����������������ģ��Ⱥ��������������
+
+### ����
+
+���� [optimizing_bpf_map_update_in_xDS_mode](https://github.com/kmesh-net/kmesh/blob/main/docs/proposal/optimizing_bpf_map_update_in_xDS_mode-en.md) ���ᵽ�ģ�Ϊ�˽�� map-in-map ��¼���»��������⣬Kmesh ͨ���Կռ任ʱ��ķ�ʽ�����ʱһ���Դ������м�¼����С��ģ��Ⱥ�����²������������⣬���ǣ���֧�ִ��ģ��Ⱥ�����磬5000 ������� 100,000 �� Pod��ʱ��map-in-map ���ж���Ĵ�С�dz��󣬲��� `BPF_MAP_TYPE_ARRAY_OF_MAPS` ���͵� map ��֧�� `BPF_F_NO_PREALLOC`����ᵼ�´������ڴ��˷ѡ�����֧�� map-in-map ��¼�ĵ�����������������ģ��Ⱥ��������������
+
+#### Ŀ��
+
+- ֧�ִ��ģ��Ⱥ�е����������
+- �������ûָ�������
+
+### �᰸
+
+Kmesh ���û�ģʽ�¹��� map-in-map ��ʹ�á�Ϊ��֧�ֵ�������������ṹ��չ���£�
+
+```c
+struct inner_map_mng {
+    int inner_fd;
+    int outter_fd;
+    struct bpf_map_info inner_info;
+    struct bpf_map_info outter_info;
+    struct inner_map_stat inner_maps[MAX_OUTTER_MAP_ENTRIES];
+    int elastic_slots[OUTTER_MAP_ELASTIC_SIZE];
+    int used_cnt;           // real used count
+    int alloced_cnt;        // real alloced count
+    int max_alloced_idx;    // max alloced index, there may be holes.
+    int init;
+    sem_t fin_tasks;
+    int elastic_task_exit;  // elastic scaling thread exit flag
+};
+
+struct inner_map_stat {
+    int map_fd;
+    unsigned int used : 1;
+    unsigned int alloced : 1;
+    unsigned int resv : 30;
+};
+```
+
+Map-in-map �������̣�
+
+![map-in-map-elastic-process](pics/map-in-map-elastic-process.svg)
+
+������ map-in-map ���ݺ����ݵ�ʾ����
+
+![map-in-map-elastic](pics/map-in-map-elastic.svg)
+