Update properties.json

[lzehl]

• adding missing plurals
• fixing wrong logic application (from myself yesterday) in some cases (@Raphael-Gazzotti must be plural in respect to the value of a property not in respect to the 'owner' of the property; e.g. isPartOf remains isPartOf or uses remains uses no matter if the value is plural or singular)

@apdavison can you please double check & merge if okay? (should solve also some conflicts we had yesterday with openMINDS_Python)

Note on the codespell error: This seems to fail because of the abbreviation TE which is not yet added to the exceptions of the codespell script.