Email Template hyperlinks

Hi all, got a weird issue I have never seen before. So we use hyperlinks in our email templates but when customers click on the link it leads to them going into our netsuite system but obviously reads as Page not found

The hyperlink is very basic which is a a href link leading to the company website. However, when the customer clicks on it, it leads them to a Page not Found with the URL link reading as "https://282736.app.netsuite.com/app/crm/common/www.companysite.com" as opposed to the website itself (www.companysite.com)

I am not too sure why this is happening, is there a preference or something leading to this?