Table sort by column example

https://next.flowbite-svelte.com/docs/components/table#sorting-by-column

![Image](https://github.com/user-attachments/assets/61735597-71cb-45cd-bfb6-c33a956b4f4e)

This should be:

![Image](https://github.com/user-attachments/assets/9a952b7b-963a-4b0f-876a-a160b18cb2f3)