missing icon in the exporter HTML at the package level

the image source used on the packages list is only a folder (./themes/legacy/images/), generating an error when we display the html page and in the CHM file

<img width="234" alt="Image" src="https://github.com/user-attachments/assets/5d05ed6e-77dd-4493-a027-55cbbfb7d1d2" />

this sample come from https://developpeurpascal.github.io/FMX-Tools-Starter-Kit/