add screenshot to readme

Author: lovasoa

CHANGELOG.md

@@ -37,6 +37,7 @@
   - When an error occurs while executing a SQL statement, the error message now always includes the (potentially transformed) SQL statement that was sent to the database.
   - Fixed a problem where database errors would be displayed twice in the error message.
 - Fixed layout issues in the card component when embedding content with `embed`: remove double border and padding.
+  - ![embedded card screenshot](https://github.com/user-attachments/assets/ea85438d-5fcb-4eed-b90b-a4385675355d)
 
 ## 0.30.1 (2024-10-31)
 - fix a bug where table sorting would break if table search was not also enabled.