[DOC] Query Insights with Top N Queries

[ansjcy]

What do you want to do?

• Request a change to existing documentation
• Add new documentation
• Report a technical problem with the documentation
• Other

Tell us about your request. Provide a summary of the request and all versions that are affected.
We need to add documents for the initial Query Insight feature (top N Queries).

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.
opensearch-project/OpenSearch#11506
opensearch-project/OpenSearch#11186
opensearch-project/OpenSearch#11429

[hdhalter]

Thanks for entering the doc issue for this feature, @ansjcy! Do you know in which release this feature is targeting? And, will you also be providing the documentation PR?

[hdhalter]

Thanks for confirming this is going in 2.12, @ansjcy, and for taking care of the doc PR.