Update resources.md

docs/about/resources.md

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 Help build a bibliography in the [Democratic Mediums group on Zotero](https://www.zotero.org/groups/2315526/democratic_mediums).
 
-## Other directories
+## Related directories
 
 * [#dgov foundation](https://dgov.foundation)
     - [Wiki](https://wiki.dgov.foundation/)
     - [DAO Landscape Report](https://dao-landscape.gitbook.io/project/), including "On-Chain Governance Case Studies"
 * [Liberating Structures](http://www.liberatingstructures.com/)
+* [Web 3 Revenue Primitives](https://github.com/FEMBusinessModelsRing/web3_revenue_primitives/)
 * Wikipedia:
     - [Comparison of electoral systems](https://en.wikipedia.org/wiki/Comparison_of_electoral_systems)
     - [Portal: Elections](https://en.wikipedia.org/wiki/Portal:Elections)