error on build to eartharxiv

[johnjarmitage]

When I build my curvenote markedown to pdf using the eartharxiv template I get the following error:

article.md 'github' GitHub social identity must be a valid username, org/repo, or org URL: https://github.com/brenhinkeller (at _build/templates/tex/myst/eartharxiv/template.yml#template.authors.0)
Error: Cannot use invalid template.yml: _build/templates/tex/myst/eartharxiv/template.yml

[stevejpurves]

@agoose77 @rowanc1 any to the myst cli changes recently, that would have made github: https://github.com/brenhinkeller invalid? it is a valid github profile, just not a github org.

[rowanc1]

Yeah, this should be validated through and normalized, but clearly isn't the case. About two months or so ago this was modified over in MyST.

Your PR should fix it up.