Merge branch 'docs/bprescott/20240325-essettings' into 'master'

Add Elasticsearch important settings to install section

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/147807



Merged-by: Ashraf Khamis <akhamis@gitlab.com>
Approved-by: Ashraf Khamis <akhamis@gitlab.com>
Co-authored-by: Ben Prescott_ <bprescott@gitlab.com>