Yeah, that threw me off as well. I'm not really sure what was happening there - possibly editing/titling by a non-native English speaker who isn't familiar with difference between the two.
If the distributor cared anything about the media that it's distributing, you wouldn't see this sort of thing. It's genuinely disrespectful to the people who actually made the movie. Masterpiece or mess, at least give enough of a shit to title your trailers correctly.