rpcbind.8: Fix missing option entry in commit df3f247e46

Commit df3f247e46 added descriptions for the new command line
option "-I".  However, it failed to update the .Op line.

This is a content change.

Reviewed by:	Alexander Ziaee <concussious.bugzilla@runbox.com> (manpages)
Differential Revision:	https://reviews.freebsd.org/D45118

usr.sbin/rpcbind/rpcbind.8

@@ -1,6 +1,6 @@
 .\" Copyright 1989 AT&T
 .\" Copyright 1991 Sun Microsystems, Inc.
-.Dd July 5, 2024
+.Dd July 11, 2024
 .Dt RPCBIND 8
 .Os
 .Sh NAME
@@ -8,7 +8,7 @@
 .Nd universal addresses to RPC program number mapper
 .Sh SYNOPSIS
 .Nm
-.Op Fl 6adiLlNswW
+.Op Fl 6adIiLlNswW
 .Op Fl h Ar bindip
 .Sh DESCRIPTION
 The