You can edit your own discussion posts and replies directly from the post menu or through your profile.
Edit a Post or Reply from the Discussion
Follow these steps to edit a post or reply:
Go to the discussion thread.
Find the post or reply you want to edit.
Click the ellipsis icon (...) or the menu next to your post.
Select Edit.
Make your changes.
Click Save.
Edit a Post Using “My Contributions”
Use this option if you cannot find your post in the discussion.
Go to your profile page.
Click My Contributions.
Select List of Contributions.
Find the post you want to edit.
Click Edit.
Make your changes and save.