update mastodon

allow someone to specify any mastodon url for users that don't use mastodon.social

Author: Joshua

layouts/partials/social.html

@@ -164,8 +164,8 @@
 <a href="https://www.researchgate.net/profile/{{ . }}" rel="me noopener noreffer" target="_blank"><i class="iconfont icon-researchgate"></i></a>
 {{ end }}
 {{ with .Site.Params.Social.Mastodon}}
-<a href="https://mastodon.social/{{ . }}" rel="me noopener noreffer" target="_blank"><i class="iconfont icon-mastodon"></i></a>
+<a href="{{ . }}" rel="me noopener noreffer" target="_blank"><i class="iconfont icon-mastodon"></i></a>
 {{ end }}
 {{ with .Site.Params.Social.Thingiverse}}
 <a href="https://www.thingiverse.com/{{ . }}" rel="me noopener noreffer" target="_blank"><i class="iconfont icon-t"></i></a>
-{{ end }}
+{{ end }}