Resolved Problem SP Simple Portfolio Theme DECORA

Hello

This is my website : https://antiquite.creation-site-internet.be/

If I click on the picture with the text Barbecue I switch to https://antiquite.creation-site-internet.be/test-2/item/1-fleur-condos.html

How do you do for modify this page : https://antiquite.creation-site-internet.be/test-2/item/1-fleur-condos.html

I don't find the solution

Thank you for your help.
Sylvain