"Invalid frontmatter" errors are missing context #393
Description
See: https://github.com/mdn/translated-content/actions/runs/19654018862/job/56286826237#step:7:70
ERROR rari_doc::reader: Invalid frontmatter: duplicate field `title`
ERROR rari_doc::reader: Invalid frontmatter: could not find expected ':' at line 5 column 1, while scanning a simple key at line 4 column 1
ERROR rari_doc::reader: Invalid frontmatter: duplicate field `title`
ERROR rari_doc::reader: Invalid frontmatter: duplicate field `title`
ERROR rari_doc::reader: Invalid frontmatter: duplicate field `title`
ERROR rari_doc::reader: Invalid frontmatter: duplicate field `title`
Error: Fatal error reading docs