fix style issues

test/memex/accounts_test.exs

@@ -316,7 +316,7 @@ defmodule Memex.AccountsTest do
     test "deletes all tokens for the given user", %{user: user} do
       _session_token = Accounts.generate_user_session_token(user)
 
-      {:ok, _} =
+      {:ok, _user} =
         Accounts.update_user_password(user, valid_user_password(), %{
           "password" => "new valid password"
         })