WIP trying to replace the Twitter link with Mastodon

config/_default/menu.yaml

@@ -12,12 +12,12 @@ main:
     url: /about/
     weight: 30
 social:
-  - identifier: twitter
-    name: Twitter
-    url: https://twitter.com/erynofwales
+  - identifier: mastodon
+    name: Mastodon
+    url: "https://mastodon.social/@erynofwales"
     weight: 10
     params:
-      shortName: tw
+      shortName: ma
   - identifier: github
     name: Github
     url: https://github.com/erynofwales