Use jam icons instead of feather

https://jam-icons.com

layouts/taxonomy/list.html

@@ -6,7 +6,7 @@
     {{ if eq .Kind "term" }}
     <span class="rss-link">
         {{ with .OutputFormats.Get "rss" }}
-        <a href="{{ .Permalink }}">{{ partial "icon.html" "rss" }}</a>
+        <a href="{{ .Permalink }}">{{ partial "icon.html" "rss-feed" }}</a>
         {{ end }}
     </span>
     {{ end }}