Programmatic clinks cannot use substitutions as part of host

[davidreisbr]

Repro:

1. Try to create a programmatic link go/foo/%s -> http://foo%s.domain.com

Expected: Creation succeeds and do link works as expected

Actual: I get a toast error: You must provide a valid destination URL

Ideally replacements should work on any part of the url, like host, protocol, etc. and the replaced string should work as a subpart as well. I.e. go/foo/%s -> http://foo%s.com and not only go/foo/%s -> http://%s.com