man: keyctl_pkey_verify(3) should point to keyctl_pkey_sign(3)

This fixes man(1) and mandb(8) complaining that keyctl_pkey_verify.3.gz
is self referencing.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: David Howells <dhowells@redhat.com>
1 file changed