How can i edit the shopify theme files for kalles 3.0.0 theme to make the tag p instead of h3

Store Design
1

how can i edit the shopify theme files for kalles 3.0.0 theme to make the tag p instead of h3:

Tarta Pañales Mustela

2

First of all thank you very much for your answer.

I can’t find it. Those headers correspond to a section called Collection Slider, but I can’t find it in the theme files.

Could you tell me how to do it? I can’t find it browsing Products/Collections either.