get rid of about after posts

I have just posted my first blog post, and I have noticed that there is an “about me” section right under my post that has text that is originally from my “about me” widget. However, I have typos in it, and have changed it in my “about me” widget, but it will not change in the “about section” under the posts. I would either like to delete this “about” section, or change it. I do not see it in the widgets section, and it only appears after posts. Thanks!