Add type to rel=self link in feed.

lib/pleroma/web/ostatus/feed_representer.ex

@@ -26,7 +26,7 @@ def to_simple_form(user, activities, users) do
         {:updated, h.(most_recent_update)},
         {:link, [rel: 'hub', href: h.(OStatus.pubsub_path(user))], []},
         {:link, [rel: 'salmon', href: h.(OStatus.salmon_path(user))], []},
-        {:link, [rel: 'self', href: h.(OStatus.feed_path(user))], []},
+        {:link, [rel: 'self', href: h.(OStatus.feed_path(user)), type: 'application/atom+xml'], []},
         {:author, UserRepresenter.to_simple_form(user)},
       ] ++ entries
     }]

test/web/ostatus/feed_representer_test.exs

@@ -28,7 +28,7 @@ test "returns a feed of the last 20 items of the user" do
       <updated>#{most_recent_update}</updated>
       <link rel="hub" href="#{OStatus.pubsub_path(user)}" />
       <link rel="salmon" href="#{OStatus.salmon_path(user)}" />
-      <link rel="self" href="#{OStatus.feed_path(user)}" />
+      <link rel="self" href="#{OStatus.feed_path(user)}" type="application/atom+xml" />
       <author>
         #{user_xml}
       </author>