buggy description in http://datashapes.org/sparq

A small bug in http://datashapes.org/sparql:

sparql:langMatches
  rdf:type sh:Function ;
  sparql:symbol "langMatches" ;
  rdfs:comment "Returns true if language-tag (first argument) matches
language-range (second argument) per the basic filtering scheme
defined in [RFC4647] section 3.3.1." ;
  sh:parameter [
      sh:path sparql:arg1 ;
      sh:description "the literal that is expected to have ?arg2 as
language tag" ;

The last description is incorrect. arg1 is a lang tag (potentially
longer than arg2). it's not a langString literal.