Change text read more button

Hello, I’m Marco Pignat a graphic designer. I discovered Grav Cms recently :slight_smile:
I’ve a simply question, I hope:
I have installed Grav CMS with Gantry 5 plugin and Helium theme. In the blog list page I would like change the text link “read more” inside the button, with another text.
What procedure should I follow?
Thanks a lot for the support.
Marco Pignat