avp XML doc updates

modules/avp/doc/avp.xml

@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" 
-   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
+"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
+
+<!-- Include general documentation entities -->
+<!ENTITY % docentities SYSTEM "../../../docbook/entities.xml">
+%docentities;
+
+]>
 
 <book id="avp" xmlns:xi="http://www.w3.org/2001/XInclude">
     <bookinfo>

modules/avp/doc/avp_functions.xml

@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" 
-   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
+"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
+
+<!-- Include general documentation entities -->
+<!ENTITY % docentities SYSTEM "../../../docbook/entities.xml">
+%docentities;
+
+]>
 
 <section id="avp.functions" xmlns:xi="http://www.w3.org/2001/XInclude">
     <sectioninfo>