MastoAPI: Fix reblog emojis.

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -46,7 +46,7 @@ def render("status.json", %{activity: %{data: %{"type" => "Announce", "object" =
         website: nil
       },
       language: nil,
-      emoji: []
+      emojis: []
     }
   end
 

test/web/mastodon_api/status_view_test.exs

@@ -103,5 +103,6 @@ test "a reblog" do
 
     assert represented[:id] == to_string(reblog.id)
     assert represented[:reblog][:id] == to_string(activity.id)
+    assert represented[:emojis] == []
   end
 end