style(feed): format Atom fallback assertion

test/pleroma/web/feed/user_controller_test.exs

@@ -169,7 +169,8 @@ defmodule Pleroma.Web.Feed.UserControllerTest do
         |> get("/users/#{user.nickname}/feed.atom")
         |> response(200)
 
-      assert response =~ "<script>alert('feed')</script>"
+      assert response =~
+               "<script>alert('feed')</script>"
 
       content_values = response |> parse() |> xpath(~x"//entry/content/text()"sl)