Update RBAC reference

[GGP1]

Description

Closes wazuh/wazuh#20851.

Updates the RBAC reference according to the changes introduced in wazuh/wazuh#21653. No other reference to the endpoints was found in the documentation.

Checks

Docs building

• Compiles without warnings.

Code formatting and web optimization

• Uses three spaces indentation.
• Adds or updates meta descriptions accordingly.
• Updates the redirects.js script if necessary (check this guide).

Writing style

• Uses present tense, active voice, and semi-formal registry.
• Uses short, simple sentences.
• Uses bold for user interface elements, italics for key terms or emphasis, and code font for Bash commands, file names, REST paths, and code.

[javimed]

@GGP1 should we change base branch to 4.9.0 now? Please confirm and let merge this.

[GGP1]

@GGP1 should we change base branch to 4.9.0 now? Please confirm and let merge this.

Yes, I've just rebased it. Thanks!