Update doc - Allow flexible params in retrievalUri (Ontoportal integration)

[luddaniel]

@qqmyers Adding documentation for IQSS/dataverse#10404

[qqmyers]

Thanks. Can you also update the json schema at

dataverse-external-vocab-support/examples/config/CVocConf.schema.json

Lines 266 to 272 in 02928cb

	"description": "Dataverse will use the retrieveal-uri internally to retrieve and cached information about a specific term URI when it is first used. Dataverse will call the URL, substituting the term URI for parameter {0}. If there is no error, the response will be filterd according to the retrieval-filtering schema to populate an internal database table and to populate metadata export formats.",
	"default": "",
	"examples":
	[
	"https://skosmos.dev.finto.fi/rest/v1/data?uri={0}",
	"https://pub.orcid.org/v3.0/{0}/person"
	]

- maybe just updating the description and example as you've done in the readme.md. (You could check in a schema validator but it looks like the schema just assumes this is a string and doesn't check the content/format.)

[luddaniel]

@qqmyers done