doc/man1/x509.pod: fix typo
This looks like a copy&paste error from req.pod to x509.pod.
@@ -173,7 +173,7 @@ options. See the B<TEXT OPTIONS> section for more information.
=item B<-noout>
-This option prevents output of the encoded version of the request.
+This option prevents output of the encoded version of the certificate.
=item B<-pubkey>
