Merge pull request #1018 from dfinity/alex/update-rust-basic-bitcoin-readme

update rust basic_bitcoin readme

Author: altkdf

rust/basic_bitcoin/README.md

@@ -33,7 +33,7 @@ For a deeper understanding of the ICP < > BTC integration, see the [Bitcoin inte
 
 This tutorial has the same smart contract written in
 [Motoko](https://internetcomputer.org/docs/current/developer-docs/backend/motoko/index.md)
-using ECDSA and Bitcoin API but currently not Schnorr API.
+using ECDSA, Schnorr, and Bitcoin API.
 
 You can clone and deploy either one, as they both function in the same way.