Mention pinentry-mac Keychain settings (#2136)
Mention pinentry-mac Keychain settings (#2136)

RELEASE_NOTES=n/a

Signed-off-by: Dominik Schulz <6770bd8ec89754c4b214547a9e0b59641dfbb9e3@gauner.org>
gopasspw/gopass,gopasspw/gopass