looks like a problem with the url being split/wrapped over two lines. If you copy and paste the entire link, does it work? if so, there's your problem.
As to how to fix it, I'm rusty on sending mail with php, but a dirty hack around would be to use an API from something like tinyurl to produce a much smaller link for you to click that won't be broken in two.
Otherwise, check your email templates and config to see if you can see why the split is happening.
If all these things come up zero, then I guess log a bug report?
