Try alshedivat#4 This should work

_config.yml

@@ -16,7 +16,7 @@ footer_text: >
 lang: en # the language of your site (for example: en, fr, cn, ru, etc.)
 icon: # the emoji used as the favicon
 url: https://sergio-perilla.github.io # the base hostname & protocol for your site
-baseurl: # the subpath of your site, e.g. /blog/
+baseurl: /about/ # the subpath of your site, e.g. /blog/
 last_updated: false # set to true if you want to display last updated in the footer
 impressum_path:  # set to path to include impressum link in the footer, use the same path as permalink in a page, helps to conform with EU GDPR