[WIP] Fix Jekyll avatar rendering issue

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Jekyll avatar not working</issue_title>
<issue_description>{% avatar benbalter size=250 %} renders as <img class="avatar avatar-small" src="https://avatars.githubusercontent.com/sitegithubownername?v=4&amp;s=200" alt="sitegithubownername" srcset="https://avatars.githubusercontent.com/sitegithubownername?v=4&amp;s=200 2x" width="100" height="100"></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes jekyll/github-metadata#297

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