Add proper examples to the SAML configuration

[EkinTiras]

The idp.entity_id field is easily confused with the sp.entity_id field when people follow the documentation. By including a basic example and explicitly mentioning that these two are not the same, this problem can be avoided.

[cla-assistant]

All committers have signed the CLA.

[juergen-walter]

@Madeline-Schaefer can you please publish the change

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[Madeline-Schaefer]

Yes, no problem, I can publish the change.

[Madeline-Schaefer]

The documentation and its changes were published: https://help.sap.com/docs/cloud-logging/cloud-logging/prerequisites?locale=en-US&version=Cloud