Improve documentation

Type of change

• Bug Fix
• Feature

Please provide link to gitlab issue or ADR(Architecture Decision Record)

search-service!653 (comment 318252)

Does this introduce a change in the core logic?

• [NO]

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS
• Azure
• GCP
• IBM

Does this introduce a breaking change?

• [NO]

What is the current behavior?

What is the new/expected behavior?

Have you added/updated Unit Tests and Integration Tests?

Any other useful information

It's just update documentation