The HTML file created in 1c. was renamed to index.html, so we have a few options for updating the link:

1. Use the full URL in the href attribute.

<a href="https://[your_github_username].github.io/[your_repository_name]/index.html">Link</a>

2. Don't specify a file at the end of the url and it will default to opening index.html.

<a href="https://[your_github_username].github.io/[your_repository_name]">Link</a>

3. Use a filepath to link to index.html.

<a href="index.html">Link</a>

4. Use a filepath, but leave out the filename.

<a href=".">Link</a>

Note: you might think that if we leave out the file name from <a href="index.html">Link</a>, it will be <a href="">Link</a>. However, in HTML href="" will cause the link to not do anything. Therefore, we use href="."

. is a special character that represents the folder that the current HTML file (with the link) is in.
And because we don't specify a file name after ., it will default to opening index.html in the current folder.

We will learn more about . when we learn about the command line.

Option 4 above is the preferred option because it's the easiest to type and won't break if the first part of the URL (https://[your_github_username].github.io/[your_repository_name]) changes.