See attached JENKINS-6232.patch which contains change to DescriptionSetterPublisher.java to linkify multiple URLs in a single description (via regex).
I've written the regex according to the rules in RFC 1738, so it should parse any valid URL (which is an improvement on the link I gave in the comment above).
Apologies, I couldn't get the test environment to work correctly so I couldn't successfully update/run the unit test. Should be a very simple test case to add though (and of course all existing tests, including the URL based test, will still pass).
Hope this can be included in the next version! 
See attached JENKINS-6232.patch which contains change to DescriptionSetterPublisher.java to linkify multiple URLs in a single description (via regex).
I've written the regex according to the rules in RFC 1738, so it should parse any valid URL (which is an improvement on the link I gave in the comment above).
Apologies, I couldn't get the test environment to work correctly so I couldn't successfully update/run the unit test. Should be a very simple test case to add though (and of course all existing tests, including the URL based test, will still pass).
Hope this can be included in the next version!