lexicographer files are not described properly in the RDF (dc:subject should be wn:lexfile)

[fcbond]

Release format
RDF

Describe the bug
dc:subject is used for the lexfiles, instead of lexfile. This differs from the XML, and other projects such as DanNet, already use dc:subject for something else. lexfile is defined in wn-lemon-1.3.ttl.

:lexfile a owl:DatatypeProperty ;
  rdfs:label "lexicographer file"@en ;
  rdfs:comments "Indicates the lexicographer file that this synset is derived from"@en .

To Reproduce

download the ttl file inspect a synset:

wnid:oewn-00001740-n
    dc:subject "noun.Tops" ;
    a ontolex:LexicalConcept ;
    skos:inScheme <https://en-word.net/> ;
    wn:definition [
        rdf:value "that which is perceived or known or inferred to have its own distinct existence (living or nonliving)"@en
    ] ;
    wn:hyponym wnid:oewn-00001930-n, wnid:oewn-00002137-n, wnid:oewn-04431553-n ;
    wn:ili ili:i35545 ;
    wn:partOfSpeech wn:noun .

Expected behavior

dc:subject should become wn:lexfile

wnid:oewn-00001740-n
    wn:lexfile "noun.Tops" ;
    a ontolex:LexicalConcept ;
    skos:inScheme <https://en-word.net/> ;
    wn:definition [
        rdf:value "that which is perceived or known or inferred to have its own distinct existence (living or nonliving)"@en
    ] ;
    wn:hyponym wnid:oewn-00001930-n, wnid:oewn-00002137-n, wnid:oewn-04431553-n ;
    wn:ili ili:i35545 ;
    wn:partOfSpeech wn:noun .


**Additional context**

This was solved for XML in https://github.com/globalwordnet/english-wordnet/issues/794