comark/charts/unknown-prop · Use only the props of ::chart and its annotations

::chart reads type, x, y, and title, and an annotation inside it reads at, series, mark, color, and side. Any other prop is ignored, so a misspelled title leaves the chart without a caption, and screen readers name it by what it draws instead.

Incorrect

::chart{titel="Ducks per pond"}
| pond | ducks |
| --- | --: |
| north | 12 |
| south | 7 |
| east | 9 |
::

lint-comark example.mdexample.md:1:1 comark/charts/unknown-prop::chart 1: titel isn't a prop of ::chart.Valid props: type, x, y, title, labels.✖ 1 problem

Correct

::chart{title="Ducks per pond"}
| pond | ducks |
| --- | --: |
| north | 12 |
| south | 7 |
| east | 9 |
::

lint-comark example.md✔ No problems