xaggr.sgml 文件校验修复：

- 修正AI翻译部分中文语义问题
- 代码块内容，取消AI翻译，对其进行了复原操作

Author: linjialiang

postgresql/doc/src/sgml/xaggr.sgml

@@ -556,7 +556,7 @@ SELECT attrelid::regclass, array_accum(atttypid::regtype)
   </para>
 ________________________________________________________-->
   <para>
-   这是使用两种不同的实际数据类型作为参数的输出：
+   以下是使用两种不同的实际数据类型作为参数的输出：
 
 <programlisting>
 SELECT attrelid::regclass, array_accum(attname)
@@ -565,19 +565,19 @@ SELECT attrelid::regclass, array_accum(attname)
     GROUP BY attrelid;
 
    attrelid    |              array_accum
----------------+---------------------------------------
+-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-+-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-
  pg_tablespace | {spcname,spcowner,spcacl,spcoptions}
-(1 行)
+(1 row)
 
 SELECT attrelid::regclass, array_accum(atttypid::regtype)
     FROM pg_attribute
     WHERE attnum &gt; 0 AND attrelid = 'pg_tablespace'::regclass
     GROUP BY attrelid;
 
    attrelid    |        array_accum
----------------+---------------------------
+-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-+-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-
  pg_tablespace | {name,oid,aclitem[],text[]}
-(1 行)
+(1 row)
 </programlisting>
   </para>
 <!-- pgdoc-cn_end sig_en=6de0a677de514a31915a9ea128d3bb98 -->