Fixed links to prometheus docs

[paketb0te]

Fixed the anchors in the links to prometheus docs for scrape_config and file_sd_config.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[SuperQ]

This role has been deprecated in favor of a the prometheus-community/ansible collection.