Carrie04lid

Hi! New here. My website is live and I have created a blog and used the function to push it to my facebook page. What is visible on the facebook post is a url that was the original squarespace template name rather than my sites url. I can see where it is in the settings but it doesn't allow me to change it. I have screen shot of what it looks like on FB, if anyone is able to help advise on where and how to change this it would be greatly appreciated! Carrie