Update references from drafts to RFCs in config.h

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index d5502a9..901e26d 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -1520,8 +1520,8 @@
 
 /** \def MBEDTLS_SSL_EXTENDED_MASTER_SECRET
  *
- * Enable support for Extended Master Secret, aka Session Hash
- * (draft-ietf-tls-session-hash-02).
+ * Enable support for RFC 7627: Session Hash and Extended Master Secret
+ * Extension.
  *
  * This was introduced as "the proper fix" to the Triple Handshake familiy of
  * attacks, but it is recommended to always use it (even if you disable
@@ -1539,7 +1539,8 @@
 /**
  * \def MBEDTLS_SSL_FALLBACK_SCSV
  *
- * Enable support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv-00).
+ * Enable support for RFC 7507: Fallback Signaling Cipher Suite Value (SCSV)
+ * for Preventing Protocol Downgrade Attacks.
  *
  * For servers, it is recommended to always enable this, unless you support
  * only one version of TLS, or know for sure that none of your clients