Make cat and girl date

This workflow produces today's date, formats it in YYYY-MM-DD- and adds that sequence into a URL for a cat and girl comic of that date. unfortunately, there is a descriptive word at the end of every file name, so a wild card must come between the date and the .gif suffix. I have not figured out how to make the wild card be read as a regular expression, rather than as a  part of the web address.