Grammar mistake

Hi everyone,

I posted a question yesterday and I made a grammar mistake and it is very embarrassing. I typed the question quite late at night so I must have missed it. Do you think that it would be possible to correct the mistake in the original post?

It happened to me once quite a while ago and one of you corrected the word for me. I am sorry to trouble you with that. I wouldn't have asked you this favour but I hadn't noticed the mistake before and it's nerve-wrecking. It's more of a typo that I made twice in one post. Besides, I have used the word many times on this forum and I always got it right except for the last time I am referring to.

Thank you in advance for your help.