[DOC] Security Analytics Get Mappings API documentation is incorrect. Mandatory param missing

[eirsep]

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.

Get mappings API in security analytics plugin has a mandatory request parameter called index_name which is not mentioned in API documentation

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.
https://opensearch.org/docs/latest/security-analytics/api-tools/mappings-api/#get-mappings

[eirsep]

Plz edit get mappings API and add the following table

Field	Type	Description
index_name	String	The name of the index used for log ingestion.

[hdhalter]

@Naarcha-AWS - please update. Thanks!