bin/54121: mandoc lint reports mandoc.db is outdated

[venture37%geeklan.co.uk@localhost]

>Number:         54121
>Category:       bin
>Synopsis:       mandoc lint reports mandoc.db is outdated
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Apr 13 15:05:00 +0000 2019
>Originator:     Sevan Janiyan
>Release:        NetBSD-HEAD
>Organization:
>Environment:
NetBSD 8.99.37
>Description:
mandoc reports
mandoc: outdate mandoc.db lacks $foo entry, run makewhatis /usr/share/man

where foo is a manual referenced in the see also section
>How-To-Repeat:
mandoc -Tlint /usr/share/man/man4/altq.4
>Fix: