about: Clean up the markup a little bit

I'm still not happy with the circular image. It's not aligned like I would like.

layouts/shortcodes/circular_image.html

@@ -6,7 +6,8 @@
 {{- $resized_img := $img.Resize (printf "%dx%d" $width $width) -}}
 <img
   {{ with $id }}id="{{ . }}"{{ end }}
-  class="circular{{ with $classes }} {{ . }}{{ end }}"
+  class="img--circular{{ with $classes }}  {{ . }}{{ end }}"
   src="{{ $img.RelPermalink }}"
   {{ with $alt }}alt="{{ . }}"{{ end }}
-  width="{{ $width }}" height="{{ $width }}">
+  width="{{ $width }}"
+  height="{{ $width }}">