Docs and cleanup

lib/birdy_chat_web/api/messages/controller.ex

@@ -1,4 +1,8 @@
 defmodule BirdyChatWeb.Api.Messages.Controller do
+  @moduledoc """
+  The endpoint to be used by users from the "home server".
+  """
+
   use BirdyChatWeb, :controller
 
   def create(conn, params) do

lib/birdy_chat_web/api/messages/json.ex

@@ -1,4 +1,6 @@
 defmodule BirdyChatWeb.Api.Messages.JSON do
+  @moduledoc false
+
   def render("create.json", %{message: message}) do
     message
   end