Fix CommonAPI.vote returning tuples inside of the activity array instead of just activities

lib/pleroma/web/common_api/common_api.ex

@@ -132,6 +132,7 @@ def vote(user, object, choices) do
         Enum.map(choices, fn index ->
           answer_data = make_answer_data(user, object, Enum.at(options, index)["name"])
 
+          {:ok, activity} =
             ActivityPub.create(%{
               to: answer_data["to"],
               actor: user,
@@ -139,6 +140,8 @@ def vote(user, object, choices) do
               object: answer_data,
               additional: %{"cc" => answer_data["cc"]}
             })
+
+          activity
         end)
 
       object = Object.get_cached_by_ap_id(object.data["id"])