More info needed for multiple fields

[rmseifried]

Several fields are missing commentary and example value (see the working spreadsheet and the public view on OpenGeoMetadata):

• Subject
• Relation
• Member of
• Is part of
• Source
• Version
• Replaces
• Is replaced by

[dl-maura]

Update in the website: https://opengeometadata.github.io/docs/aardvarkSchema

[kgjenkins]

Link from the relationship fields to the overview at https://opengeometadata.org/docs/upgrading#new-elements-for-item-relations

and see if that section needs enhancements.