合并彭老翻译到11.2版本 unaccent.sgml

Author: Steve888888

postgresql/doc/src/sgml/unaccent.sgml

@@ -327,12 +327,13 @@ unaccent(<optional><replaceable class="parameter">dictionary</replaceable>, </op
 <!--==========================orignal english content==========================
  <para>
   If the <replaceable class="parameter">dictionary</replaceable> argument is
-  omitted, <literal>unaccent</> is assumed.
+  omitted, the text search dictionary named <literal>unaccent</> and
+  appearing in the same schema as the <function>unaccent()</>
+  function itself is used.
  </para>
 ____________________________________________________________________________-->
  <para>
-  如果省略了<replaceable class="parameter">dictionary</replaceable>参数，
-  则使用<literal>unaccent</literal>。
+  如果省略<replaceable class="parameter">dictionary</replaceable>参数，则使用名为<literal>unaccent</literal>并且与<function>unaccent()</function>函数有相同模式的文本搜索词典。
  </para>
 
 <!--==========================orignal english content==========================