I think you would be fine submitting it as is, because many magazines like shorter stories to balance out the many longer ones they receive. On the top of the ms you can state "~940 words." On the other hand, some mags are sticklers for word count, and not knowing who you're submitting to, I don't know if that mag is or not.
If you are able to add a few more words to the story, that would work, too. Lucky you - many of us have the opposite problem and need to cut words all the time to make the correct word count.