Add error details in error logging in Activity Update handler

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/federation/activity_pub/actions/update.ex

@@ -36,8 +36,7 @@ defmodule Mobilizon.Federation.ActivityPub.Actions.Update do
         {:ok, activity, entity}
 
       {:error, err} ->
-        Logger.error("Something went wrong while creating an activity")
-        Logger.debug(inspect(err))
+        Logger.error("Something went wrong while creating an activity", err: inspect(err))
         {:error, err}
     end
   end