The markdown
| Tag (decimal) | Tag (hex) | Type |
| ---------------------:| ---------------------:| --------------------- |
| 2 | 02 | INTEGER |
With Goldmark generate html containing
<td align="right">2</td>
Witch is not valid: the align attribute is obsolete https://developer.mozilla.org/en-US/docs/Web/HTML/Element/td#attr-align and marked as ERROR with html5validator.
Related (for Blackfriday) : Markdown table rendered by Hugo includes invalid HTML
The Goldmark code suggest they know about it: https://github.com/yuin/goldmark/blob/master/extension/table.go#L287 and that we may be able to «override “align” attribute» https://github.com/yuin/goldmark/pull/78#issuecomment-568905772 but how? (ideally to specify the wanted css class to do the same, to avoid inline style) Is it something that Hugo needs to implement?