I think Raz is more concerned about that the function works rather than the text for it gets double checked. But of course, a typo is a typo and can be modified to look just a tad better.
When you think of it, you can probably find quite some grammatical errors and typos here and there on these boards, site and even in the game itself(not pointing towards the in-game chat). I remember not too long ago when Whitelightheart pointed out how the board "Mesh's" in the addons & mods board should be "Meshes", that board were up for over a year with that error, without anyone even pointing it out xD
It happens from time to time.