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>

man/keyctl_pkey_verify.3

diff --git a/man/keyctl_pkey_verify.3 b/man/keyctl_pkey_verify.3
index 6b2927a..0535113 100644
--- a/man/keyctl_pkey_verify.3
+++ b/man/keyctl_pkey_verify.3
@@ -1 +1 @@
-.so keyctl_pkey_verify.3
+.so keyctl_pkey_sign.3