How to edit Login Block?

Hello - I've been looking around for tutorials on how to edit the Login Block, and while we can edit where it appears and such on the site, we are struggling to find out how we can link to our knowledgebase article regarding lost passwords. We are getting lots of tickets lately because people aren't pressing the Lost Password? link, and we want to call attention to the troubleshooting users can do on their own. This is the block I'm talking about:,to%20the%20front%20page%3B%20or

Does anyone know where in the Language Customization or elsewhere we could add a link to the Login Block?

Thanks in advance.