I would agree with the others that if you are comfortable, then it should be fine. I'm wondering if the shop where you purchased the bike either cut the fork to be compatible with others that you had test rode, or perhaps it came from the manufacturer that way. But that is simply my personal curiousity

AS far as length of forks, that method has changed a bit. In the past, we always cut forks in the manner that Deb mentioned. In the past couple of years, shops have been leaving them a bit long and putting spacers on top of the stem. This simply leaves room for the owner/LBS to adjust the height as needed. The headset is adjusted in the same manner... all in all it's simply a convenience for the owner.

If you are still concerned, you could always check with a fitter to see what is the correct height for you. And you could also check on the specs from the manufacturer themselves.

The most important part of this equation is that you are comfortable!