Below is a simple guide for implementing NIP-05 name verification using GitHub Pages.
<your username>.github.io._config.yml file with include: [".well-known"].well-known folder.nostr.json inside the .well-known folder with the following content, replacing your user name and hex public key.
{
  "names": {
    "<your nostr username>": "<your nostr hex key>"
  }
}