Docs feedback: Describe new parameters

Problem to solve

By coincidence I noticed that /api/v4/application/settings "suddenly" (it has been three months since I looked at that part of the API) returns quite a few settings more on our EE installtion (with a starter license), e.g. "dns_rebinding_protection_enabled", those are not described on https://docs.gitlab.com/ee/api/settings.html, please add them.

Undocumented settings:

Setting	Verified in API?	Documented?	Group
throttle_incident_management_notification_enabled	✅	🚫	~"group::health"
throttle_incident_management_notification_per_period	✅	🚫	~"group::health"
throttle_incident_management_notification_period_in_seconds	✅	🚫	~"group::health"
clientside_sentry_dsn		🚫	~"group::health"
clientside_sentry_enabled		🚫	~"group::health"
elasticsearch_indexed_field_length_limit	✅	🚫	groupglobal search
elasticsearch_max_bulk_concurrency	✅	🚫	groupglobal search
elasticsearch_max_bulk_size_mb	✅	🚫	groupglobal search
force_pages_access_control	✅	✅	~"group::release management" (?)
minimum_password_length	✅	🚫	~"group::access"
updating_name_disabled_for_users		🚫	~"group::access" (?)
npm_package_requests_forwarding		🚫	~"group::package"
default_project_deletion_protection		🚫	groupproject management
mirror_max_delay	✅	✅	groupsource code
prevent_merge_requests_committers_approval		🚫	groupsource code (?)
protected_paths_raw	✅	🚫
static_objects_external_storage_auth_token	✅	🚫
static_objects_external_storage_url	✅	🚫
throttle_protected_paths_enabled	✅	🚫
throttle_protected_paths_period_in_seconds	✅	🚫
throttle_protected_paths_requests_per_period	✅	🚫
protected_paths_raw	✅	🚫
static_objects_external_storage_auth_token	✅	🚫
static_objects_external_storage_url	✅	🚫
custom_http_clone_url_root	✅	🚫