[EDC - JSON-ld context] geographicName is a rdf:langString in SHACL but defined as string in jsonld context

[rdolcetr]

geographicName term definition should be updated from

"geographicName": { "@id": "elm:geographicName", "@type":"xsd:string" },

to

"geographicName": { "@id": "elm:geographicName", "@container": "@language" }