fix: author sharing image due to Hugo breaking change

When sharing the page of an author profile (/author/author-name), the avatar image was no longer shown as the sharing image.

Hugo team made a breaking change in recent Hugo versions to rename the page `.Kind` to `term` instead of `taxonomy` in this case so the statement was no longer triggered.

Fix #1987

wowchemy/layouts/partials/site_head.html

@@ -181,8 +181,9 @@
   {{ $has_logo := fileExists "assets/images/logo.png" | or (fileExists "assets/images/logo.svg") }}
   {{ $og_image := "" }}
   {{ $twitter_card := "summary_large_image" }}
-  {{ if (and (eq .Kind "taxonomy") $avatar_image) }}
-    {{ $og_image = ($avatar_image.Fill "270x270 Center").Permalink }}{{/* Match image proc in About widget. */}}
+  {{ if (and (eq .Kind "term") $avatar_image) }}
+    {{/* Match image processing in About widget to prevent generating more images than necessary. */}}
+    {{ $og_image = ($avatar_image.Fill "270x270 Center").Permalink }}
     {{ $twitter_card = "summary" }}
   {{ else if $featured_image }}
     {{ $og_image = $featured_image.Permalink }}