Added 'NA' as a valid page type

Author: lmckenzi

xml/OTHER-stterm-kb.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <specification defaultWorkgroup="vocab" defaultVersion="1.0" url="http://www.hl7.org/documentcenter/public/ballots/2021MAY/downloads/HL7_LM_TERM_KB_R1_I1_2021MAY.pdf" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../schemas/specification.xsd">
   <version code="1.0" deprecated="false"/>
+  <page key="NA" name="(NA)"/>
   <page name="Purpose" key="purpose"/>
   <page name="Glossary" key="glossary"/>
   <page name="Chapter 1: Tinkar Overview" key="1_overview"/>