How to remove username from site name in GitHub Pages?

Question

GitHub

Hello! Uploaded the site to github. I created GitHub Pages and at first the site name was displayed normally, according to the name of the repository. https://bestchildren.github.io/ Then I made updates and now the site name displays the full path with the username https://ilya-naumenko.github.io/bestchildren.github.io/ I read help, googled, poked back and forth , and did not understand what the problem is. Can anyone suggest how it is treated?
Thanks in advance.

Answer 1