Failed to modify the permission description

Signed-off-by: Nzhang-daiyue <zhangdaiyue1@huawei.com>
Change-Id: I11ee925669d9afb114b84e2536bed3032eff4272

zh-cn/application-dev/reference/apis/js-apis-medialibrary.md

@@ -316,7 +316,7 @@ deleteAsset(uri: string): Promise\<void>
 
 **系统接口**：此接口为系统接口。
 
-**需要权限**：ohos.permission.READ_MEDIA and ohos.permission.WRITE_MEDIA
+**需要权限**：ohos.permission.READ_MEDIA 和 ohos.permission.WRITE_MEDIA
 
 **系统能力**：SystemCapability.Multimedia.MediaLibrary.Core
 
@@ -364,7 +364,7 @@ deleteAsset(uri: string, callback: AsyncCallback\<void>): void
 
 **系统接口**：此接口为系统接口。
 
-**需要权限**：ohos.permission.READ_MEDIA and ohos.permission.WRITE_MEDIA
+**需要权限**：ohos.permission.READ_MEDIA 和 ohos.permission.WRITE_MEDIA
 
 **系统能力**：SystemCapability.Multimedia.MediaLibrary.Core