Update word.

src/man/libpq.3

 .\" This is -*-nroff-*-
 .\" XXX standard disclaimer belongs here....
-.\" $Header: /cvsroot/pgsql/src/man/Attic/libpq.3,v 1.21 1998/07/15 17:08:23 momjian Exp $
+.\" $Header: /cvsroot/pgsql/src/man/Attic/libpq.3,v 1.22 1998/07/15 17:34:06 momjian Exp $
 .TH LIBPQ INTRO 07/08/98 PostgreSQL PostgreSQL
 .SH DESCRIPTION
 Libpq is the programmer's interface to Postgres.  Libpq is a set of
@@ -39,7 +39,7 @@ communication to be used, rather than the default local Unix domain sockets.
 .sp
 \(bu
 .B PGUSER
-sets the username use to connect to the database and for authentication.
+sets the username used to connect to the database and for authentication.
 .sp
 \(bu
 .B PGOPTIONS