fix(a11y): add alt text to author profile image

layouts/partials/author-extra.html

@@ -19,6 +19,7 @@
         class="!mt-0 !mb-0 h-24 w-24 rounded-full me-4"
         width="96"
         height="96"
+        alt="{{ $.Site.Params.Author.name | default " Author" }}"
         src="{{ $final.RelPermalink }}"
         data-zoom-src="{{ $squareImage.RelPermalink }}">
     {{ end }}