Hey, I'm an English instructor, so typos are something I look for on a DAILY BASIS. To me, it's not an insult that I catch them, it's my job, and it's my habit to correct, not criticize.
I'm actually more concerned about the shift in hair color in mid-comic. To me, despite the sudden close-up view, the hair needed a tad more black. But hey, I'm not an artist, and if that's the way Jeph wanted it done, that's his cake and candy.
Enjoy the comic, and the image of those heaving Raven-bosoms.