pkg/55960: Incorrect reference in pkg_comp.conf man page

[rnestor%tx.rr.com@localhost]

>Number:         55960
>Category:       pkg
>Synopsis:       Incorrect reference in pkg_comp.conf man page
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 27 13:20:01 +0000 2021
>Originator:     Bob Nestor
>Release:        NetBSD-9.99.78
>Organization:
>Environment:
NetBSD 9.99.78 (GENERIC) #0: Fri Jan 22 22:54:53 UTC 2021  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64

>Description:
The man page for pkg_comp.conf in the SEE ALSO section lists sandbox.conf(5) which doesn't exist.  The reference should probably be to sandboxctl.conf(5) which does exist.+
>How-To-Repeat:
After installing pkg_comp, do a "man pkg_comp.conf"
>Fix: