add basic references to the new methods in documentation

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1334)
diff --git a/doc/man3/X509_dup.pod b/doc/man3/X509_dup.pod
index 8226983..f1b2761 100644
--- a/doc/man3/X509_dup.pod
+++ b/doc/man3/X509_dup.pod
@@ -170,6 +170,8 @@
 RSA_OAEP_PARAMS_new,
 RSA_PSS_PARAMS_free,
 RSA_PSS_PARAMS_new,
+SCRYPT_PARAMS_free,
+SCRYPT_PARAMS_new,
 SXNETID_free,
 SXNETID_new,
 SXNET_free,
diff --git a/doc/man3/d2i_X509.pod b/doc/man3/d2i_X509.pod
index c4d89a8..f501948 100644
--- a/doc/man3/d2i_X509.pod
+++ b/doc/man3/d2i_X509.pod
@@ -133,6 +133,7 @@
 d2i_RSA_PUBKEY,
 d2i_RSA_PUBKEY_bio,
 d2i_RSA_PUBKEY_fp,
+d2i_SCRYPT_PARAMS,
 d2i_SCT_LIST,
 d2i_SXNET,
 d2i_SXNETID,
@@ -307,6 +308,7 @@
 i2d_RSA_PUBKEY,
 i2d_RSA_PUBKEY_bio,
 i2d_RSA_PUBKEY_fp,
+i2d_SCRYPT_PARAMS,
 i2d_SCT_LIST,
 i2d_SXNET,
 i2d_SXNETID,