[Q3 Release] Kibana 9.7 Analytics and Platform updates

This issue tracks remaining doc needs (or at least checking if there's a doc need) for the Kibana 9.7 release.

Related issues:

## Release docs

## Dashboards and Visualizations

## Discover

## ES|QL editor in Kibana

## Kibana platform

## Kibana navigation and UI

## Kibana admin

## Reporting

## Maintenance windows

## Rules and alerts

## Machine learning

## Connectors