[Internal]: Remove Tech Preview badge from Attack Discovery & Automatic Import in 8.18+ Docs

[dhru42]

Description

What: attack discovery and automatic import are currently showing in our docs as in tech preview but both of these functionalities have been generally available as of 818 release

Please make the necessary updates so the docs reflect this change.

Resources

https://www.elastic.co/docs/solutions/security/ai/attack-discovery

Which documentation set does this change impact?

Elastic On-Prem and Cloud (all)

Feature differences

ASAP

What release is this request related to?

N/A

Serverless release

ASAP

Collaboration model

The documentation team

Point of contact.

Main contact: @dhru42

Stakeholders: @jamesspi