GREASE is now RFC 8701.

I forgot to update the references.

Change-Id: I1a746eec13afd9fd1e59ca1824b2dd0f83ff7f74
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/47666
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/handshake_client.cc b/ssl/handshake_client.cc
index b12113b..7e2fbb5 100644
--- a/ssl/handshake_client.cc
+++ b/ssl/handshake_client.cc
@@ -223,7 +223,7 @@
     return false;
   }
 
-  // Add a fake cipher suite. See draft-davidben-tls-grease-01.
+  // Add a fake cipher suite. See RFC 8701.
   if (ssl->ctx->grease_enabled &&
       !CBB_add_u16(&child, ssl_get_grease_value(hs, ssl_grease_cipher))) {
     return false;