Aibek is here from Speedimize.io
Open Shopify Panel -> Online Store -> Themes -> Current theme -> Edit code -> Open file footer.liquid (or if there is no such file, search in file theme.liquid line including include `footer...` )
Next, find exactly the HTML anchor tag, and edit the value of the href attribute to the link that you need (i.e. with the value HTTPS) https://prnt.sc/15p4k7b
Hope that helps you.