Your post was mergedpost was merged, which I think is the cause of the confusion.
Regardless, you wouldn't be asked to approve edits to your questions or answers. That isn't how the site works. Others can make edits any timecan make edits any time and (with sufficient reputation) they are automatically approved.
If users make an edit to someone else's post, and have less than 2000 reputationless than 2000 reputation, your edits are peer-reviewed by someone who does.