Use MRZ recognition examples in MRZ license overuse FAQ #73

Copilot review finding on PR #69: #69 (comment)

mrz-scanner/license/ensure-no-overuse.md currently includes examples that fetch and update the Barcode Reader PT_READ_BARCODES task. Following them on an MRZ page would configure the wrong recognition task.

Verify the MRZ Scanner preset/API and supply MRZ-specific examples, or remove the MRZ article/index entry if this advice does not apply. Do not change the valid Barcode Reader example while correcting the MRZ content. Content follow-up outside PR #69.