Corrected spelling errors

@@ -671,7 +671,7 @@
   rdf:type :ShutdownType ;
   rdfs:label "Dependent on shutdown"^^xsd:string ;
 .
-:Design_Milestone
+:DesignMilestone
   rdf:type :MilestoneType ;
   rdfs:label "Design Milestone"^^xsd:string ;
 .
@@ -732,9 +732,9 @@
   rdfs:comment "A Shutdown Type that involves shutting down rapidly in order to prevent or remedy a dangerous situation"^^xsd:string ;
   rdfs:label "Emergency shutdown"^^xsd:string ;
 .
-:EnMilestone
+:End
   rdf:type :MilestoneType ;
-  rdfs:label "En milestone"^^xsd:string ;
+  rdfs:label "End Milestone"^^xsd:string ;
 .
 :EngineeringMilestone
   rdf:type :MilestoneType ;