Congratulations, you found a misspelling in my otherwise correct post.
However, the fact remains that you were wrong to correct Greg when his post was flawless, and for that you still owe him an apology.
You can either do the right thing and apologize to Greg for your error, or you can engage in a futile attempt to divert attention from your own error, which, despite your best efforts, will not succeed in fooling anyone who reads this thread.
The choice is yours, and the opportunity to apologize to Greg still exists. I suggest that you not squander this one too.