Update Prover APIs in Linea architecture documentation

[srinathln7]

Description

Write a clear and concise description of what you want to happen. Add any considered drawbacks.

Update the outdated API specification in the Provers section of the linea-architecture-description.

Motivation

This section should indicate what value we are receiving from it.

Tasks

• Medium-level task that needs to be implemented for this feature request to be considered complete.
  Ensure the documentation reflects the latest prover API changes.

Acceptance criteria

• List tests that need to be implemented or checks to consider this task completed.

Risks

• These are risks that may prevent completion of the task as well as areas to pay special attention to

Remember to

• Add the documentation label in case there is an impact on the documentation
• Add priority and team labels
• Add Task for updating the Runbook or adding/updating existing metrics and alerts.