git: fetch.9: Document fuwordadd{32,64}().

[Sascha Wildner]

commit 9d8d7b85ada4c9d1c212b4a0f9424a9e8cd293dc
Author: Sascha Wildner <***@online.de>
Date: Sat Nov 17 21:25:37 2018 +0100

fetch.9: Document fuwordadd{32,64}().

Summary of changes:
share/man/man9/Makefile | 4 +++-
share/man/man9/fetch.9 | 26 +++++++++++++++++++++++---
2 files changed, 26 insertions(+), 4 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/9d8d7b85ada4c9d1c212b4a0f9424a9e8cd293dc