Firefoxで開こうとしたらダウンロードされちゃったんだけどapplication/octet-streamなんだねえ

$ curl -i https://zunda.ninja/.well-known/webfinger; echo

HTTP/2 200

server: GitHub.com

content-type: application/octet-stream

last-modified: Sun, 06 Aug 2023 02:39:10 GMT

access-control-allow-origin: *

etag: "64cf07ce-1e9"

expires: Sun, 06 Aug 2023 02:59:44 GMT

cache-control: max-age=600

x-proxy-cache: MISS

x-github-request-id: …

accept-ranges: bytes

date: Sun, 06 Aug 2023 02:49:44 GMT

via: 1.1 varnish

age: 0

:

vary: Accept-Encoding

x-fastly-request-id: …

content-length: 489

{"subject":"acct:zundan@mastodon.zunda.ninja","aliases":["https://mastodon.zunda.ninja/@zundan","https://mastodon.zunda.ninja/users/zundan"],"links":[{"rel":"http://webfinger.net/rel/profile-page","type":"text/html","href":"https://mastodon.zunda.ninja/@zundan"},{"rel":"self","type":"application/activity+json","href":"https://mastodon.zunda.ninja/users/zundan"},{"rel":"http://ostatus.org/schema/1.0/subscribe","template":"https://mastodon.zunda.ninja/authorize_interaction?uri={uri}"}]}