Welcome to stackexchange. When asking a question please try to be as specific in your question as possible. Try describing what you want to know – also using screenshots or wireframes is ok – but please avoid forcing others to ckick on a link to understand your question. Questions like “How can I do this?” are usually not very likely to get a lot of attention from the community.
That said – I did click the link – and I see two pages: the “home” page and the front–page.
If you want the “home” button to direct users to your front–page, you can do this in WordPress’s admin interface under Appearance > Menus. Basically there are various ways to to this – here’s two approaches, leading to the same ersult: Depending on how your site is / your menus are configures I would either make the “home” button link to “https://wordpress.stackexchange.com/” manually, or add a new custom button “home” (linking to “https://wordpress.stackexchange.com/”) and remove the old one (linking to “/home”).