Set or change default text in hyperlink popup in post editor

Question

When writing a post or page in the post editor (not the Visual editor but the HTML editor) and clicking on the "link" button, a popup appears with http:// already prefilled.

Is there a way to change this default text?

For example, since I usually link internally to my own site I would want to use my base URL because then I could either quickly type the rest of the URL, or just overwrite it if I was hyperlinking somewhere else.

http://www.myurl.com/

I swear I saw a blog article on how to do this but I cannot locate it through searching the web.

Thanks in advance for any help.