Support reaching user@sub.domain.tld at user@domain.tld (#134)

[akkoma] / test / fixtures / webfinger / masto-host-meta.xml

<?xml version="1.0" encoding="UTF-8"?>
<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
  <Link rel="lrdd" template="https://{{domain}}/.well-known/webfinger?resource={uri}"/>
</XRD>