change Tunnel cite from URI to str; cope plebs (#809)

Author: johnbeve

src/cco-modules/ArtifactOntology.ttl

@@ -2649,7 +2649,7 @@ cco:ont00000704 rdf:type owl:Class ;
                 rdfs:label "Constructed Tunnel"@en ;
                 skos:definition "A Transportation Artifact that is designed to be substantially enclosed, have access constrained to portals, and to enable travel through surrounding soil, earth, or rock formation."@en ;
                 skos:scopeNote "This class is not intended to include natural tunnels, such as caves." 
-                cco:ont00001754 "Federal Highway Administration. Guidance on Structures Subject to the National Tunnel Inspection Standards (NTIS). United States Department of Transportation, 27 Oct. 2015"^^xsd:anyURI ;
+                cco:ont00001754 "Federal Highway Administration. Guidance on Structures Subject to the National Tunnel Inspection Standards (NTIS). United States Department of Transportation, 27 Oct. 2015"^^xsd:string ;
                 cco:ont00001760 "https://www.commoncoreontologies.org/ArtifactOntology"^^xsd:anyURI .