[ex/plenary] docs: explain dev setup

examples/plenary/README.md

@@ -1,24 +1,8 @@
-## Vocabs
+# Plenary
 
-* [Schema.org](https://schema.org)
-  * [Event](https://schema.org/Event)
-  * [Role](https://schema.org/Role)
-* [Organization Activity ontology](https://innoweb.mondragon.edu/ontologies/dabgeo/domain-task/application_type/organization_energy_assessment/organizationactivity/1.0/index.html) 
-  * [Chair](https://innoweb.mondragon.edu/ontologies/dabgeo/domain-task/application_type/organization_energy_assessment/organizationactivity/1.0/index.html#http://ontologies.smile.deri.ie/pdo#Chair)
-  * [Scribe](https://innoweb.mondragon.edu/ontologies/dabgeo/domain-task/application_type/organization_energy_assessment/organizationactivity/1.0/index.html#http://ontologies.smile.deri.ie/pdo#Scribe)
-  * [Attendee](https://innoweb.mondragon.edu/ontologies/dabgeo/domain-task/application_type/organization_energy_assessment/organizationactivity/1.0/index.html#http://ontologies.smile.deri.ie/pdo#Attendee)
-  * [Absentee](https://innoweb.mondragon.edu/ontologies/dabgeo/domain-task/application_type/organization_energy_assessment/organizationactivity/1.0/index.html#http://ontologies.smile.deri.ie/pdo#Absentee)
-
-## Shapes
-
-* [Event](https://github.com/janeirodigital/sai-js/blob/main/packages/css-storage-fixture/shapetrees/shapes/Event%24.shex)
-* [Role](https://github.com/janeirodigital/sai-js/blob/main/packages/css-storage-fixture/shapetrees/shapes/Role%24.shex)
-
-## Trees
-
-* [Event](https://github.com/janeirodigital/sai-js/blob/main/packages/css-storage-fixture/shapetrees/trees/Event%24.ttl)
-* [Role](https://github.com/janeirodigital/sai-js/blob/main/packages/css-storage-fixture/shapetrees/trees/Role%24.ttl)
+## Development
 
+After [the steps described in the workspace root](https://github.com/janeirodigital/sai-js?tab=readme-ov-file#development) application will be available on http://localhost:4700
 
 ## Requirements