fix version info

[VladimirAlexiev]

  owl:versionInfo "v3.1.0"@en ;
  owl:priorVersion "https://git.fpfis.eu/datateam/ERA/era-vocabulary/-/releases/v3.0.0"@en ;
  owl:versionURI "https://git.fpfis.eu/datateam/ERA/era-vocabulary/-/releases/v3.1.0"@en .

There are a couple of problems:

• "v3.1.0" is not an English phrase, so please remove the lang tag
• https://git.fpfis.eu is dead (https://github.com/Interoperable-data/ERA-Ontology-3.1.0/issues/48), and it's not the master location of the ontology anyway.
• Please decide whether you'll use https://github.com/Interoperable-data/ERA_vocabulary or maybe https://github.com/Interoperable-data/ERA-Ontology as the master location for the ontology
• There are no Releases in https://github.com/Interoperable-data/ERA_vocabulary but I think you should start recording releases, then you can use a "releases" URL in priorVersion, versionURI
• Last but not least, replace these with real URLs rather than langStrings. Eg:

  owl:versionURI <https://github.com/Interoperable-data/ERA_vocabulary/release/v3.1.0>

[Interoperable-data]

Yes, that is the approach we intend to do during the migration from v3.0.0 tov3.0.1. There is already a release here https://github.com/Interoperable-data/ERA_vocabulary/releases/v3.0.0