We recentlyupdatedmarkdownlint-cli2 on The Hub and noticed we started receiving increased errors related to headings. I dove into why and noticed thatmarkdownlint-cli2 has removed the rule aliases that use the word "header" in favour of "heading".

As per the commit message, "header" aliases were deprecated inv0.9.0. I checked yourpackage.json and saw you're depending inv0.13.0but still haverules with the "header" alias.

These rules should be updated to use "heading" instead of "header".