Add docs for S3-compatible audit-logs streaming

[DominikLa]

Description

We have added support for S3-compatible streaming of the audit logs, which introduced a new form for setting up the S3 configs
The docs are baised on E2E testing of this new feature: https://circleci.atlassian.net/wiki/spaces/NOTIFY/pages/8113946705/E2E+test+-+S3+compatible+Minio#3.-MinIO-Policy-and-Bucket-Creation-(via-mc)

Reasons

To have up to date documentation for the new mini-feature

Content Checklist

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