manpages contain `<!-- Automatically generated by Pandoc -->`

I noticed this while verifying https://github.com/rubygems/gemstash/issues/396 locally, but it seems to also affect the released gemstash:  Seems to come from this template: https://github.com/jgm/pandoc-templates/blob/3430359b4c688dbedaa23d76575184191a12c4d9/default.man#L4-L7 I only looked briefly, but I haven't found an option to toggle it