git: a5efdeedef48..e9bf778aefc1 - vendor/mandoc - vendor branch updated

From: Baptiste Daroussin <bapt_at_FreeBSD.org>
Date: Mon, 15 Nov 2021 15:37:33 UTC
The branch vendor/mandoc has been updated by bapt:

URL: https://cgit.FreeBSD.org/src/log/?id=a5efdeedef48..e9bf778aefc1

e9bf778aefc1 mandoc: import v1.14.6