doc: update screenshots.

Author: jaywcjlove

README.md

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   </p>
 </div>
 
-![DayBar 1](./assets/screenshots-1.jpg)
 ![DayBar 2](./assets/screenshots-2.jpg)
-![DayBar 3](./assets/screenshots-3.jpg)
-![DayBar 4](./assets/screenshots-4.jpg)
+
+![DayBar 1](./assets/screenshots-1.jpg)
 
 DayBar is an application that displays the local date and reminder events in the menu bar. Click on DayBar in the menu bar to view the calendar, calendar events, and reminders, and it supports synchronization with Apple Calendar. It integrates calendar and reminder functions into the status bar menu for easy management and viewing, while turning reminders into simple and beautiful to-do items.
 

README.zh.md

@@ -23,10 +23,9 @@
   </p>
 </div>
 
-![DayBar 1](./assets/screenshots-1.jpg)
 ![DayBar 2](./assets/screenshots-2.jpg)
-![DayBar 3](./assets/screenshots-3.jpg)
-![DayBar 4](./assets/screenshots-4.jpg)
+
+![DayBar 1](./assets/screenshots-1.jpg)
 
 DayBar 是一款在菜单栏显示本地日期和提醒事件的应用。点击菜单栏中的 DayBar，即可查看日历、日历事件和提醒事项，并支持与 Apple 日历同步。它将日历和提醒功能整合到状态栏菜单，方便管理和查看，同时让提醒事项呈现为简洁美观的待办事项。