pgsql: Fix typo: < * Allow WAL traffic to be steamed to another server

Log Message:
-----------
Fix typo:

< * Allow WAL traffic to be steamed to another server for stand-by

* Allow WAL traffic to be streamed to another server for stand-by

Modified Files:
--------------
pgsql/doc:
TODO (r1.1663 -> r1.1664)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1663&amp;r2=1.1664)
pgsql/doc/src/FAQ:
TODO.html (r1.170 -> r1.171)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.170&amp;r2=1.171)