docs: update README to include test sample image and improve problem reporting instructions

README.md

@@ -3,8 +3,11 @@
 
 Simple enough for csv, no more fancy function you need to learn and think!
 
-![image](https://github.com/user-attachments/assets/6d956e79-4be7-4172-92e2-6f14ddba0dda)
+<!-- ![image](https://github.com/user-attachments/assets/6d956e79-4be7-4172-92e2-6f14ddba0dda) -->
 
+![test-sample](./asssets/test-sample.png)
+
+> if you encounter any problems, download `test/test-sample.csv` to see what's different from the test csv file. Issue with an screenshot will help us fix it faster.
 
 [中文版本Readme](./README_zh.md)
 

README_zh.md

@@ -5,6 +5,10 @@
 
 [English Version Readme](./README.md)
 
+![test-sample](./asssets/test-sample.png)
+
+> 如果你遇到任何问题，请下载 `test/test-sample.csv`，对比你的 CSV 文件和测试文件有何不同。提交带有截图的问题可以帮助我们更快地修复。
+
 ## 简介
 
 保持专注！不要浪费时间创建花哨的表格。