comark/sources/unknown-prop · Use only ::sources' props

::sources reads title, the heading above the list, and ignores every other prop. A misspelled title leaves the list under the default heading, Sources.

Incorrect

::sources{titel="Further reading"}
1. [Homing](https://en.wikipedia.org/wiki/Homing_pigeon)
::

lint-comark example.mdexample.md:1:1 comark/sources/unknown-prop::sources 1: titel isn't a prop of ::sources, so it's ignored.Use title.✖ 1 problem

Correct

::sources{title="Further reading"}
1. [Homing](https://en.wikipedia.org/wiki/Homing_pigeon)
::

lint-comark example.md✔ No problems