Fix for sysutils/fd v8.6.0

[Laurent Cheylus]

Hi,

in the last update for sysutils/fd v8.6.0 (commit 2023/01/31 20:04:16 by 
sthen@), there is an error in patches/patch-Makefile :

$(orefix) instead of $(prefix) to install man1/fd.1 file

With this error, unable to build package for fd-8.6.0. With this fix, 
build and package are OK on amd64.

Laurent