Update EventOntology.ttl

Fixes #649

Author: gregfowlerphd

src/cco-modules/EventOntology.ttl

@@ -2685,7 +2685,7 @@ cco:ont00001162 rdf:type owl:Class ;
                  rdfs:subClassOf cco:ont00000402 ;
                  rdfs:comment "Examples: agreeing, betting, guaranteeing, inviting, offering, promising, swearing, volunteering"@en ;
                  rdfs:label "Act of Commissive Communication"@en ;
-                 skos:definition "An Act of Communication that commits a speaker to some future action."@en ;
+                 skos:definition "An Act of Communication in which an Agent commits themselves to doing, or to refraining from doing, some future action."@en ;
                  cco:ont00001754 "Derived (loosely) from: John Searle's Speech Acts: An Essay in the Philosophy of Language" ;
                  cco:ont00001760 "https://www.commoncoreontologies.org/EventOntology"^^xsd:anyURI .