I would like to change a specific rel=canonical url to another one in prestashop

Question

I would like to **change **a specific rel=canonical url to another one in prestashop. I do not want to **add **but to change the existing ones.

for this page https://site.pl/sklep/ this

change to

and for for this page https://site.pl/sklep/product.html

change to

Php and htaccess add options.