Log Message:
-----------
Fix typo spotted by Thom Brown.
Tags:
----
REL9_0_STABLE
Modified Files:
--------------
pgsql/doc/src/sgml:
wal.sgml (r1.68.2.1 -> r1.68.2.2)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/wal.sgml?r1=1.68.2.1&r2=1.68.2.2)