it is possible to change /jekyll-theme-memoirs/ by my name?

[sallkaec]

Hi, I want to change this part /jekyll-theme-memoirs/ of my URL https://sallkaec.github.io/jekyll-theme-memoirs/. I change baseURL on _config.yml, but not work, appear error 404. Please, help!
What other file should I change ?

[kryg0n]

Just change the name of the repository. It will work!!