Log Message:
-----------
Fix a typo in recent xfunc addition, do some routine SGML police work.
Modified Files:
--------------
pgsql/doc/src/sgml:
xfunc.sgml (r1.118 -> r1.119)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/xfunc.sgml.diff?r1=1.118&r2=1.119)