For future reference, if you go to your previous post, you will see a little pencil icon at the bottom. That pencil will allow you to edit your post. CC used to limit the editing time to 15 minutes but now you can edit whenever you find a typo. 
For future reference, if you go to your previous post, you will see a little pencil icon at the bottom. That pencil will allow you to edit your post. CC used to limit the editing time to 15 minutes but now you can edit whenever you find a typo.