Minor formatting tweak in Vagrantfile message

[zenhack]

This is a really trivial thing, but: my terminal's link detection seems to want to include the period after the url in the url itself, which means just trying to right click & open the link does not work correctly. This patch gets around this by formatting the text in a way that doesn't have the period at the end. I believe it still scans ok.

[kpreid]

FYI, the traditional way to disambiguate this is to put angle brackets around the URL. Not saying that's better than the approach you took, just that angle brackets should be reliably a delimiter in any competent URL autolinker regardless of what other punctuation is present.

[zenhack]

Makes sense; will keep that in my back pocket for later.