Windows Terminal clickable urls?
In the current public stable release, you can't. You need to manually select, copy, and paste the URL from the terminal window to your browser. As listed here, that feature is listed in the roadmap to version 2.0.
If you'd like to use the feature before Windows Terminal 2.0 is released, it's available in the 1.4 release of Windows Terminal Preview. See the release document.
Update: this is now available as of in Windows Terminal v1.5.10271.0 - it is referred to as "Support for automatic detection of URLs".