update OdumInstitute sphinx-action reference to uncch-rdmc #10218
Description
We have an (old, probably needs retooling) sphinx-build GitHub action, which refers to the OdumInstitute org, which redirects to the uncch-rdmc org: https://github.com/IQSS/dataverse/blob/develop/.github/workflows/guides_build_sphinx.yml#L14
An astute Netizen notes that someone could conceivably grab the OdumInstitute org and do nefarious things.
In the short term I'm going to update our action YAML to the current org; in the long term I'll defer to @pdurbin and @poikilotherm on how and when to update this action.
Pull request forthcoming.