doc: use xref id icuchain instead of icu_chain
authorAdam Dickmeiss <adam@indexdata.dk>
Thu, 15 Sep 2011 10:30:14 +0000 (12:30 +0200)
committerAdam Dickmeiss <adam@indexdata.dk>
Thu, 15 Sep 2011 10:30:14 +0000 (12:30 +0200)
The underscore in xref id breaks dblatex. Introducing the xreflabel
helps. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=492959


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