doc: use xref id icuchain instead of icu_chain

The underscore in xref id breaks dblatex. Introducing the xreflabel
helps. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=492959

diff --git a/doc/pazpar2_conf.xml b/doc/pazpar2_conf.xml
index 7acdfb5..887e894 100644 (file)
--- a/doc/pazpar2_conf.xml
+++ b/doc/pazpar2_conf.xml
@@ -133,7 +133,7 @@
        mergekey and facets - for the server. These definitions serves as
        default for services that don't have these given. For the meaning
        of these settings refer to the
-       <xref linkend="icu_chain">"icu_chain"</xref> element inside service.
+       <xref linkend="icuchain"/> element inside service.
       </para>
      </listitem>
     </varlistentry>
@@ -369,7 +369,7 @@
        </varlistentry>
 
        <varlistentry>
-       <term id="icu_chain">icu_chain</term>
+       <term id="icuchain" xreflabel="icu_chain">icu_chain</term>
        <listitem>
         <para>
          Specifies a named ICU rule set. The icu_chain element must include