WCS Schema not in RTD

[PaulHuwe]

When looking at the documentation on read the docs, I noticed that the wcs schema is not available: https://asdf-standard.readthedocs.io/en/latest/generated/stsci.edu/asdf/wcs/wcs-1.0.0.html

I found the link here: https://asdf-standard.readthedocs.io/en/latest/generated/stsci.edu/asdf/core/asdf-1.0.0.html