Doc: Fix deduplicate_items index term.
Reported-By: Fujii Masao
Discussion:
@@ -402,8 +402,7 @@ CREATE [ UNIQUE ] INDEX [ CONCURRENTLY ] [ [ IF NOT EXISTS ] <replaceable class=
<varlistentry id="index-reloption-deduplication" xreflabel="deduplicate_items">
<term><literal>deduplicate_items</literal>
<indexterm>
- <primary><varname>deduplicate_items</varname></primary>
- <secondary>storage parameter</secondary>
+ <primary><varname>deduplicate_items</varname> storage parameter</primary>
</indexterm>
</term>
<listitem>
