Better mention it's half go, half rust

Author: gilescope

README.md

@@ -114,7 +114,7 @@
   Open source implementation of Witnet decentralized oracle network
   protocol in Rust.
 - [xx-network](https://github.com/xx-labs/xxchain).
-  Post-quantum blockchain with integrated mixnet privacy against metadata snooping.
+  Post-quantum blockchain, mixnet privacy preventing metadata analysis. (Substrate rust+go)
 - [Zebra](https://github.com/ZcashFoundation/zebra).
   An ongoing Rust implementation of a Zcash node.
 - [Zero-chain](https://github.com/LayerXcom/zero-chain).