Markdown linting for ordered lists

[liuq]

I tried fixing some of the markdown linting errors in the hGRN problem statement. One of the issues was that the ordered list numbering did not adhere to the :one standard, which in my view is too limited (for readability, also in the markdown source one might want to put subsequent numbers instead of 1., 1., 1., etc.). Can you configure the linting action to be a bit more flexible to this respect? Or, alternatively, I suggest to switch to the :ordered style for ordered list, which is more intuitive.