[css-align] initial value for `gap` differs from `row-gap` and `column-gap`

[pkuczynski]

gap is a shorthand for row-gap and column-gap, but its initial value differs with initial values of those properties

https://www.w3.org/TR/css-align-3/#gap-shorthand

[frivoal]

You are right, it should say "see individual properties". This has already been corrected in the latest draft: https://drafts.csswg.org/css-align/#gap-shorthand