update readme

Signed-off-by: lijinfengde123 <1037761763@qq.com>

README_EN.md

@@ -8,6 +8,11 @@ The ScreenShot application is a preset system application in OpenHarmony, which
 
 ![](figures/en_diagram.png)
 
+#### feature
+    Screen capture management layer, providing screen capture window display control and picture save control.
+#### common
+   A general tool class that provides log printing and external interface management functions.
+
 ## content
 
 ```
@@ -24,6 +29,13 @@ The ScreenShot application is a preset system application in OpenHarmony, which
      ├── product           # ScreenShot general function catalog
 ```
 
+### Function description
+#### features
+    sub-component directory, provides screen capture window display control, and image save control.
+
+#### product
+    ScreenShot general function catalog, screenshot service entrance.
+
 ## sign
 1. For each module under product/phone, configure signingConfigs in build.gradle
 

README_ZH.md

@@ -2,12 +2,18 @@
 
 ## 简介
 
-ScreenShot应用是OpenHarmony中预置的系统应用，为用户提供截取当前屏幕，并保存当前图片的功能。
+### 内容介绍
+ScreenShot应用是OpenHarmony中预置的系统应用，为用户提供截取当前屏幕并保存图片的功能。
 
 ### 架构图
 
 ![](figures/cn_diagram.png)
 
+#### feature
+    截屏管理层，提供截屏窗口显示控制，图片保存控制。
+#### common
+    通用工具类，提供日志打印，外部接口管理功能。
+
 ## 目录
 
 ```
@@ -24,6 +30,13 @@ ScreenShot应用是OpenHarmony中预置的系统应用，为用户提供截取
     ├── product                         # ScreenShot总体功能目录
 ```
 
+###功能描述
+#### features
+    子组件目录，提供截屏窗口显示控制，图片保存控制。
+
+#### product
+    ScreenShot总体功能目录，截屏服务入口。
+
 ## 签名
 1.针对product/phone下的每一个模块，配置build.gradle中的signingConfigs