typo fix

src/man/explain.l

 .\" This is -*-nroff-*-
 .\" XXX standard disclaimer belongs here....
-.\" $Header: /cvsroot/pgsql/src/man/Attic/explain.l,v 1.1 1996/12/29 00:58:32 momjian Exp $
+.\" $Header: /cvsroot/pgsql/src/man/Attic/explain.l,v 1.2 1996/12/29 03:55:36 momjian Exp $
 .TH EXPLAIN SQL 11/05/95 PostgreSQL PostgreSQL
 .SH NAME
 explain \(em explains statement execution details
@@ -11,4 +11,4 @@ explain \(em explains statement execution details
 .SH DESCRIPTION
 This command outputs details about the supplied query.  The default
 output is the computed query cost.  \f2full\f1 displays a full query plan
-and costs.
+and cost.