I can install and run pixelfed on a subdomain, for example, pixelfed.example.com [http://pixelfed.example.com]. However, I also run mastodon.example.com [http://mastodon.example.com]. My webfinger points at mastodon. How do I configure a webfinger for both pixelfed and mastodon? How do you all have your webfingers setup when you run multiple activitypub-based services?