docbook: Update the path to some modules.

This document includes some module documentation, but those particular
modules currenly live in modules_s directory.

doc/presence/presence_book.xml

@@ -16,10 +16,10 @@ http://www.sagehill.net/docbookxsl/ValidXinclude.htm -->
 	<include xmlns="http://www.w3.org/2001/XInclude" href="trouble.xml"/>
 	<include xmlns="http://www.w3.org/2001/XInclude" href="xcap.xml"/>
 <!--	<section><title>Presence modules</title> -->
-	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules/pa/doc/pa_incl.xml"/>
-	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules/rls/doc/rls_incl.xml"/>
-	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules/presence_b2b/doc/presence_b2b.xml"/>
-	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules/xcap/doc/xcap.xml"/>
+	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules_s/pa/doc/pa_incl.xml"/>
+	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules_s/rls/doc/rls_incl.xml"/>
+	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules_s/presence_b2b/doc/presence_b2b.xml"/>
+	<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules_s/xcap/doc/xcap.xml"/>
 <!--	<include xmlns="http://www.w3.org/2001/XInclude"
 href="../../modules/xcap/doc/xcap.xml"/> -->
 <!--	</section>-->
@@ -35,8 +35,8 @@ href="../../modules/xcap/doc/xcap.xml"/> -->
 <!--	<chapter id="pres"><title>Presence in SER</title>-->
 <!--
 		<include xmlns="http://www.w3.org/2001/XInclude" href="install.xml"/>
-		<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules/pa/doc/pa.xml"/>
-		<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules/rls/doc/rls.xml"/>
+		<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules_s/pa/doc/pa.xml"/>
+		<include xmlns="http://www.w3.org/2001/XInclude" href="../../modules_s/rls/doc/rls.xml"/>
 		<include xmlns="http://www.w3.org/2001/XInclude" href="biblio.xml"/>
 		-->
 <!--		<xi:include href="todo.xml"/>-->