Actually to make a link simply copy the URL and paste it into a post. There is no need to click on the globe URL icon or do anything else. It's automatic if you simply paste a link with either http:// and the URL or just www. and the domain name.
There is nothing else that needs to be done.
Like this:
www.tdpri.com
That's all that's needed to make this:
www.tdpri.com