doc: tls: ECDH ciphers are not supported

doc/api/tls.markdown

@@ -117,14 +117,13 @@ automatically set as a listener for the [secureConnection][] event.  The
     conjunction with the `honorCipherOrder` option described below to
     prioritize the non-CBC cipher.
 
-    Defaults to
-    `ECDHE-RSA-AES128-SHA256:AES128-GCM-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH`.
+    Defaults to `AES128-GCM-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH`.
     Consult the [OpenSSL cipher list format documentation] for details on the
-    format.
+    format. ECDH (Elliptic Curve Diffie-Hellman) ciphers are not yet supported.
 
-    `ECDHE-RSA-AES128-SHA256` and `AES128-GCM-SHA256` are used when node.js is
-    linked against OpenSSL 1.0.1 or newer and the client speaks TLS 1.2, RC4 is
-    used as a secure fallback.
+
+    `AES128-GCM-SHA256` is used when node.js is linked against OpenSSL 1.0.1
+    or newer and the client speaks TLS 1.2, RC4 is used as a secure fallback.
 
     **NOTE**: Previous revisions of this section suggested `AES256-SHA` as an
     acceptable cipher. Unfortunately, `AES256-SHA` is a CBC cipher and therefore