Adjust wording.

doc/src/sgml/wal.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/wal.sgml,v 1.34 2005/09/29 02:29:48 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/wal.sgml,v 1.35 2005/10/01 01:42:43 momjian Exp $ -->
 
 <chapter id="reliability">
  <title>Reliability</title>
@@ -76,8 +76,8 @@
   </para>
  
   <para>
-   The following sections into detail about how the Write-Ahead Log
-   is used to obtain efficient, reliable operation.
+   The following sections explain how the Write-Ahead Log is used to 
+   obtain efficient, reliable operation.
   </para>
 
   <sect1 id="wal">