Log Message:
-----------
Fix typos, spotted by Thom Brown.
Modified Files:
--------------
pgsql/doc/src/sgml:
high-availability.sgml (r1.56 -> r1.57)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/high-availability.sgml?r1=1.56&r2=1.57)