* [DOCS] Add configuration information for population analysis
* [DOCS] Add ML population analysis examples
* [DOCS] Address feedback for population analysis
* [DOCS] More feedback on population analysis
Original commit: elastic/x-pack-elasticsearch@ffa2bfeed9
* [DOCS] Add ML categorization of messages
* [DOCS] Describe ML categorization_examples_limit property
* [DOCS] Updated ML categorization of messages
* [DOCS] Add links to ML categorization
Original commit: elastic/x-pack-elasticsearch@6403f6ce84
* [DOCS] Add ML aggregations configuration scenario
* [DOCS] Refine ML configuration page
* [DOCS] Add ML aggregation details
* [DOCS] Add links to aggregations in Configuring ML
* [DOCS] Address feedback about ML aggregations
Original commit: elastic/x-pack-elasticsearch@8474144093
Lisa Cawley