[Website]: apt-key deprecation

[survietamine]

Type of issue

None

What documentation page is affected

https://www.elastic.co/docs/reference/beats/filebeat/setup-repositories

What happened?

Hello, I'm new filebeat user and I'm a bit concerned by your install documentation using deprecated apt-key method.
Shouldn't it be updated to use deb822 format?

Additional info

No response

[yetanothertw]

Thank you for bringing this to our attention, @survietamine!
We will look into this as soon as possible.