Fix broken links

content/architecture/application/apis-and-services.md

content/architecture/application/wayland_compositors.md

content/architecture/distribution/workflow-guide.md

.../application_customization/preferences-and-persistence.md

content/concepts/platform/audio-management.md

content/concepts/platform/system-updates-and-rollback.md

content/guides/testing/lava-apertis-testing.md

content/guides/testing/lava-external-devices.md

content/policies/contributions.md

content/policies/copyrights.md

content/policies/package_maintenance.md

content/qa/_index.md

content/qa/lqa.md

content/reference_hardware/arm64.md

content/reference_hardware/rpi4_setup.md

content/reference_hardware/rpi4_setup_lava.md