fix link in readme

README.md

@@ -7,7 +7,7 @@ go-crypto is the cryptographic package adapted for Tendermint's uses
 
 ## Binary encoding
 
-For Binary encoding, please refer to the [Tendermint encoding spec](https://github.com/tendermint/tendermint/blob/develop/docs/specification/new-spec/encoding.md).
+For Binary encoding, please refer to the [Tendermint encoding spec](https://github.com/tendermint/tendermint/blob/develop/docs/spec/blockchain/encoding.md).
 
 ## JSON Encoding